DOCSLIB.ORG

Nitrogen Is Element Number 7 on the Periodic Table. It Is a Colorless Inert

Total Page：16

File Type：pdf, Size：1020Kb

Download full-text PDF Read full-text
Nitrogen Is Element Number 7 on the Periodic Table. It Is a Colorless Inert Nitrogen is element number 7 on the periodic table. It is a colorless inert gas and its uses include ammonia, preservation of food, fuel, and production of stainless steel. Nitrogen is a colorless, odorless, and tasteless gas that makes up 78% of the earth's atmosphere. It is necessary for the existence of life and is used in fertilizers and explosives. Nitrogen is a colorless, unscented, and bland gas. Nitrogen consists of about 78% of the earth¡¯s atmosphere, and is an ingredient in all living tissues. Many important industrial compounds contain nitrogen. Nitrogen is a colorless, odorless, and tasteless gas. It constitutes 78.1% by volume of Earth's atmosphere. Many important industry compounds, such as ammonia and cyanides, contain nitrogen. Nitrogen, N, is four-fifths of the air we breathe. It is colorless and odorless. It is used in many manufactures, including nitric acid and TNT. It does not burn and support combustion. Nitrogen is a tasteless, colorless, and odorless gas that makes up roughly 78% of the earth's atmosphere. It has many useful applications including the removal of skin lesions in dermatology. Nitrogen; Nitrogen, N, a metallic element, a colorless, odorless, tasteless gas and the most plentiful element in the Earth's atmosphere and a constituent of all living matter. Primary uses is in the synthesis of ammonia. Nitrogen gas is colorless, ordorless, and generally inert. It makes up 78% of the atmosphere by volume. its compounds are vital compounds of food, fertilizers, and explosives. Nitrogen is a prevalent element in the earth's atmosphere. It is odorless, colorless, and tasteless. All living organisms have nitrogen in their tissues and in their amino acids. It constituts 78.1% by volume of the Earth's atmosphere. Nitrogen is a constituent element of all living tissues and amino acids. It is a nonmetal, with an electronegativity of 3.0. The element Nitrogen has the atomic symbol N and the number 7. It’s colorless odorless and tasteless, and at normal conditions, it’s a gas. It constitutes 78.1% of Earth’s atmosphere. Nitrogen is an element which makes up about 78% of the Earth's atmosphere. Its atomic number is 7. Nitrogen's symbol is N. Its melting point is 63.15 K and its boiling point is 77.36K. Nitrogen is odorless, colorless, tasteless, and mostly inert diatomic gas at standard conditions. It is constitute 78.1% by volume of the Earth’s atmosphere. It is a constituent element of all living tissues and amino acids. Nitrogen’s symbol is N. Nitrogen is number 7 on the periodic table and has 2 core electrons and 5 valence electrons. Nitrogen’s electron configuration is 1s2 2s2 2p3. Nitrogen, N, is a colorless, odorless, gaseous element that is about four-fifths of the volume of the atmosphere. It is used chiefly in the manufacture of ammonia, nitric acid, etc. nitrogen N2 is a chemical element and has an atomic number of 7. It usually is a gas is diatomic somewhat inert, coloreless and odorless. Nitrogen makes up about 78 percent of the earths atmosphere. It is mostly used in the food processing industry, explosives and the production of electronics. Nitrogen (N), the seventh element of the periodic table, is a colorless, tasteless, odorless gas. It is found in living tissues, amino acids, Ammonia, and Nitric Acid. Nitrogen; N2; is a colorless, tasteless, odorless, and nontoxic gas. It is made by passing air over heated copper or iron. It is used as fertilizers and in ammonia. Nitrogen; is it colorless, odorless, tasteless. It is 78% of the earth’s atmosphere. It is a nonmetal with electro negativity of 3.0. Is created as part of the fusion processes in stars Nitrogen, N, is a colourless, odourless, and tasteless gas that makes up 78.1% of Earth's atmosphere. Nitrogen is a constituent element of all living tissues and amino acids The atomic weight of nitrogen is 14.0067. The electron configuration is 1s2 2s2 2p3. The density is1.251 g/L. The melting point is 63.15k. The boiling point is 77.36k. Nitrogen; Nitrogen is a chemical element with the symbol N and atomic number 7. It is a colorless, odorless, tasteless and mostly inert gas at standard conditions, constituting 78.1% by volume of Earth's atmosphere. Nitrogen; Elemental nitrogen is a colorless, odorless, tasteless and mostly inert diatomic gas at standard conditions. The triple bond in molecular nitrogen (N2) is one of the strongest in nature. Nitrogen (N2); compounds are vital components of foods, fertilizers, and explosives. Nitrogen gas is colourless, odourless, and generally inert. As a liquid it is also colourless and odourless. Nitrogen, N, is a nonmetal chemical element with 7 protons. It is present in all living tissues as proteins, nucleic acids, and other molecules, and is the largest single component of the Earth’s atmosphere. Nitrogen, N; Nitrogen is an enert gas that has an atomic number of 7 and in existance by itselft, it is colorless and tasteless contributing to seventy eight percent of the Earth's atmosphere. Nitrogen; Nitrogen is a colorless, odorless, tasteless and the is about 78% of Earth's atmosphere. It is a constituent element of all living tissues. Many industrially important compounds contain nitrogen. Nitrogen is a chemical element with an atomic number of 7. Also the symbol for Nitrogen is N. Nitrogen is a colorless, odorless, tasteless substance. Also nitrogen is a nonmetal. Nitrogen, N, a mostly inert element that makes up about 78% of the earth's atmosphere; the largest component. The triple bond in N2 is one of the strongest in nature. It was discovered in 1772. Nitrogen: Nitrogen has an atomic number of 7, it is a mostly inert diatomic gas, and it also constitutes about 78.1% by volume of Earth’s atmosphere. The N2 molecule has a triple bond, which is said to be one of the strongest bonds in nature. Nitrogen cannot be used by plants and animals. Nitrogen is a chemical element which has the symbol N and atomic number 7. Elemental nitrogen is a colourless, odourless, tasteless and mostly inert diatomic gas at standard conditions, constituting 78.1% by volume of Earth's atmosphere. Nitrogen, N, is an odorless, colourless, and tasteless gas. It is a non-metal with one of the highest levels of electronegativity on the periodic table of elements. The seventh element in the periodic table, nitrogen, is colorless, ordorless, and tasteless. Mostly an inert diatomic gas, which constitutes about 78.1% of Earth's atmosphere. Nitrogen also composes of living tissues and ammino acids. Nitrogen: an inert diatomic gas at standard conditions, constituting 78.1% by volume of Earth's atmosphere.Nitrogen is a constituent element of all living tissues and amino acids. Nitrogen: Nitrogen has the symbol N and an atomic number of 7. Elemental nitrogen is a colourless, odorless, and tasteless gas at standard conditions that makes up 78.1% of the Earth's atmosphere. In 1772, Henry Cavendish discovered nitrogen. Nitrogen is found in the atmosphere as a gas. It helps produce organic molecules. Nitrogen makes up 76% of the Earth's Atmosphere. a colorless, odorless, gaseous element that constitutes about four-fifths of the volume of the atmosphere and is present in combined form in animal and vegetable tissues, esp. in proteins. .
Load more

Recommended publications
  • Investigative Science – ALIEN PERIODIC TABLE Tuesday September 17, 2013 Perry High School Mr
    Investigative Science – ALIEN PERIODIC TABLE Tuesday September 17, 2013 Perry High School Mr. Pomerantz__________________________________________________________________________Page 1 of 2 Procedure: After reading the information below, correctly place the Alien elements in the periodic table based on the physical and chemical properties described. Imagine that scientists have made contact with life on a distant planet. The planet is composed of many of the same elements as are found on Earth. However, the in habitants of the planet have different names and symbols for the elements. The radio transmission gave data on the known chemical and physical properties of the first 30 elements that belong to Groups 1, 2, 13, 14, 15, 16, 17, and 18. SEE if you can place the elements into a blank periodic table based on the information. You may need your Periodic Table as a reference for this activity. Here is the information on the elements. 1. The noble gases are bombal (Bo), wobble, (Wo), jeptum (J) and logon (L). Among these gases, wobble has the greatest atomic mass and bombal has the least. Logon is lighter than jeptum. 2. The most reactive group of metals are xtalt (X), byyou (By), chow (Ch) and quackzil (Q). Of these metals, chow has the lowest atomic mass. Quackzil is in the same period as wobble. 3. The most reactive group of nonmetals are apstrom (A), volcania (V), and kratt (Kt). Volcania is in the same period as quackzil and wobble. 4. The metalloids are Ernst (E), highho (Hi), terriblum (T) and sississ (Ss). Sissis is the metalloid with the highest mass number.
    [Show full text]
  • Name Class Period Pre-AP Chemistry: Worksheet # 3.4 Date
    Name Class Period Pre-AP Chemistry: Worksheet # 3.4 Date Directions: Write your answers to the following questions in the space provided. For problem solving, all of the work leading up to the final answer must be shown in order to receive credit. You will not receive credit for “Magic 1. Use the periodic table to separate these 12 elements into six pairs of elements having similar properties. Ca, K, Ga, P, Si, Rb, B, Sr, Sn, Cl, Bi, Br Ca & Sr K & Rb Ga & B P & Bi Si & Sn Cl & Br 2. Use the periodic table to identify by name and symbol the elements that have the following locations. Phosphorus a. Group 15, Period 3 Barium b. Groups 2, Period 6 3. Where are the metals usually found on the periodic table? Where are the nonmetals found? The metalloids? Metals are on the left side and in the center; nonmetals are in the upper-right corner; metalloids form a border between the metals and nonmetals. 4. What are the major differences in the physical properties of metals, nonmetals, and metalloids? Metals—have luster, are malleable and ductile, good conductors of heat and electricity Nonmetals—are dull, not good conductors of heat and electricity, are brittle Metalloids—tend to be brittle, are semiconductors of heat and electricitiy 5. List one distinctive characteristic for the halogens, one for the noble gases, and one for the alkali metals. The halogens are the most reactive nonmetals The noble gases are unreactive. The alkali metals are the most reactive metals. 6. Hydrogen is shown on some periodic tables in two places: both with the alkali metals and with the halogens.
    [Show full text]
  • Periodic Table 1 Periodic Table
    Periodic table 1 Periodic table This article is about the table used in chemistry. For other uses, see Periodic table (disambiguation). The periodic table is a tabular arrangement of the chemical elements, organized on the basis of their atomic numbers (numbers of protons in the nucleus), electron configurations , and recurring chemical properties. Elements are presented in order of increasing atomic number, which is typically listed with the chemical symbol in each box. The standard form of the table consists of a grid of elements laid out in 18 columns and 7 Standard 18-column form of the periodic table. For the color legend, see section Layout, rows, with a double row of elements under the larger table. below that. The table can also be deconstructed into four rectangular blocks: the s-block to the left, the p-block to the right, the d-block in the middle, and the f-block below that. The rows of the table are called periods; the columns are called groups, with some of these having names such as halogens or noble gases. Since, by definition, a periodic table incorporates recurring trends, any such table can be used to derive relationships between the properties of the elements and predict the properties of new, yet to be discovered or synthesized, elements. As a result, a periodic table—whether in the standard form or some other variant—provides a useful framework for analyzing chemical behavior, and such tables are widely used in chemistry and other sciences. Although precursors exist, Dmitri Mendeleev is generally credited with the publication, in 1869, of the first widely recognized periodic table.
    [Show full text]
  • Pre and Post Tests Use the Periodic Table to Answer These Questions
    Pre and Post Tests Use the periodic table to answer these questions. MULTIPLE CHOICE 1. Neon is an example of a(n): A. Alkali Metal B. Noble Gas C. Halogen D. Rare Earth Metal 2. An element that has two valence or outer level electrons would be considered a(n): A. Nonmetal B. Noble Gas C. Halogen D. Metal 3. Sodium is in the same group or family as: A. Lithium B. Helium C. Calcium D. Thorium 4. Iodine is an example of a(n): A. Noble Gas B. Halogen C. Alkali Metal D. Rare Earth Metal 5. If an element is a gas at room temperature, then it must be a(n): A. Alkali Metal B. Nonmetal C. Halogen D. Alkaline Earth Metal 6. If an element has one to three valence or outer level electrons, then it is a(n): A. Nonmetal B. Halogen C. Noble Gas D. Metal 7. Which of the following elements belongs to the group that includes the most active metals? A. Aluminum B. Sodium C. Iron D. Mercury GRIDDED RESPONSE 8. How many valence or outer level electrons does an atom of the element argon have? _____________ SHORT RESPONSE 9. Barium and magnesium are both found in the same group in the periodic table. Name two properties that they would be expected to share. EXTENDED RESPONSE 10. Chlorine and bromine are both found in the same group in the periodic table. Name this group. Are these elements metals or nonmetals? How many valence electrons do they have? Name a property that these two elements would be expected to share.
    [Show full text]
  • ANSWER KEY *** of the Four Elements, Which Has Properties
    Print Test Page 1 of 33 *** ANSWER KEY *** Student Name: Grade: 09 Test Name: November Chemistry for All: Unit 2 - Periodic Table Version: 1 1. Of the four elements, which has properties most similar to that of sodium (Na)? (a) boron (B) (b) sulfur (S) (c) calcium (Ca) (d) nitrogen (N) Standard: MI_CHEM_HS-0912-C4-9-A MI HSCEs Science - Chemistry 09-12 STANDARD C4: PROPERTIES OF MATTER Topic C4.9 Periodic Table C4.9A Identify elements with similar chemical and physical properties using the periodic table. https://assessment.resa.net/Demo_Home/TD/TestReport4.aspx 2/24/2010 Print Test Page 2 of 33 2. Based on their locations on the periodic table, which of the following is true about oxygen (O) and selenium (Se)? (a) they have the same number of neutrons (b) they have the same conductivity (c) they have similar properties (d) they have the same number of electron orbitals Standard: MI_CHEM_HS-0912-C4-9-A MI HSCEs Science - Chemistry 09-12 STANDARD C4: PROPERTIES OF MATTER Topic C4.9 Periodic Table C4.9A Identify elements with similar chemical and physical properties using the periodic table. 3. Looking at the periodic table, which is true about neon (Ne) and argon (Ar)? (a) both are very stable (b) both are good conductors of electricity (c) both are highly reactive (d) both are explosive when combined with oxygen Standard: MI_CHEM_HS-0912-C4-9-A MI HSCEs Science - Chemistry 09-12 STANDARD C4: PROPERTIES OF MATTER Topic C4.9 Periodic Table C4.9A Identify elements with similar chemical and physical properties using the periodic table.
    [Show full text]
  • High School Chemistry Students' Learning of the Elements, Structure
    Louisiana State University LSU Digital Commons LSU Doctoral Dissertations Graduate School 2003 High school chemistry students' learning of the elements, structure, and periodicity of the periodic table: contributions of inquiry-based activities and exemplary graphics Knight Phares Roddy Louisiana State University and Agricultural and Mechanical College Follow this and additional works at: https://digitalcommons.lsu.edu/gradschool_dissertations Part of the Education Commons Recommended Citation Roddy, Knight Phares, "High school chemistry students' learning of the elements, structure, and periodicity of the periodic table: contributions of inquiry-based activities and exemplary graphics" (2003). LSU Doctoral Dissertations. 2431. https://digitalcommons.lsu.edu/gradschool_dissertations/2431 This Dissertation is brought to you for free and open access by the Graduate School at LSU Digital Commons. It has been accepted for inclusion in LSU Doctoral Dissertations by an authorized graduate school editor of LSU Digital Commons. For more information, please [email protected]. HIGH SCHOOL CHEMISTRY STUDENTS’ LEARNING OF THE ELEMENTS, STRUCTURE, AND PERIODICITY OF THE PERIODIC TABLE: CONTRIBUTIONS OF INQUIRY-BASED ACTIVITIES AND EXEMPLARY GRAPHICS A Dissertation Submitted to the Graduate Faculty of the Louisiana State University and Agricultural and Mechanical College in partial fulfillment of the requirements for the degree of Doctor of Philosophy in The Department of Curriculum and Instruction by Knight Phares Roddy Jr. B.S., Louisiana State University, 1985 M.N.S., Louisiana State University, 1996 May, 2003 Copyright 2003 Knight Phares Roddy Jr. All rights reserved ii ACKNOWLEDGEMENTS I would first like to acknowledge the support that my family has given me throughout my years in education. I have had the faithful support and encouragement of my beloved wife, “Dr.
    [Show full text]
  • METALS, NONMETALS, and METALLOIDS Refl Ect Earth Contains a Number of Different Materials That We Use to Meet Specifi C Needs
    METALS, NONMETALS, AND METALLOIDS refl ect Earth contains a number of different materials that we use to meet specifi c needs. We breathe air, drink water, and use different rocks and stones for construction and transportation. Early humans used rocks and minerals that they took from the ground to help them hunt, travel, and provide shelter. Humans could remove materials such as copper, gold, and silver from Earth rather easily. They found these materials had properties that made them useful. Over time, the way that humans used these materials changed their lives. Iron, silicon, and wood are only Iron found beneath Earth’s surface a few of the many materials that have made building, can be removed from the ground travel, and communication much easier. How do you and put to use. What physical use these materials to make your life easier? What properties does iron have? properties of these materials make them so useful? Scientists use the periodic table to classify elements. All of the materials that surround you—the objects you use, the air you breathe, the ground that you walk upon, even you—are made of elements and compounds. Compounds are all made of elements. A list of elements can be found on an organized chart called the periodic table. The location of each element in the periodic table is based on its properties. One of the ways the periodic table groups the elements is to separate them into metals, nonmetals, and metalloids. Metals are on the left and lower side of the periodic table; they include elements such as aluminum and gold.
    [Show full text]
  • Periodic Table of Elements
    Nonmetals and Metalloids Periodic Table of Elements Matter: Properties and Changes Warm up ● In your notebook answer the following exercise: ○ Find the element copper (Cu) in the periodic table, what can you infer about copper’s properties and explain how its position in the periodic table helps identify its properties. Lesson Objectives ● Describe the properties of nonmetals. ● Tell how metalloids are useful. Nonmetals ● Nonmetals are elements that lacks most of the properties of metals. ● Most nonmetals are poor conductors of electricity and heat and are reactive with other elements. ● Many of the nonmetals are common elements on Earth. ○ Nitrogen ○ Oxygen ○ Carbon Physical Properties of Nonmetals ● Ten of the 16 nonmetals are gases at room temperature. ○ nitrogen and oxygen ● Others are solid nonmetals are dull and brittle. ○ carbon, phosphorus, and sulfur ● Bromine is the only nonmetal that is liquid at room temperature. ● Nonmetals usually have lower densities than metals, and are poor conductors of heat and electricity. Chemical Properties of Nonmetals ● Except for Group 18, most nonmetals readily form compounds with other elements. ● Many metals and nonmetals react with each other. Their atoms usually gain or share electrons when they react to other atoms. ● Nonmetals can also form compounds with other nonmetals by sharing electrons. FAmilies of Nonmetals ● Carbon Family ● Nitrogen Family ● Oxygen Family ● Halogen Family ● Noble Gases ● Hydrogen Carbon FAmily ● The elements in Group 14. ● They gain, lose, or share four electrons when reacting with other elements. ● Carbon is the only nonmetal element in the group and play an important role in the chemistry of life. Nitrogen Family ● The elements in Group 15.
    [Show full text]
  • Metal, Nonmetal, Or Metalloid?
    Metal, Nonmetal, or Metalloid? Objective: Explore the physical and chemical properties of eight elements with the goal of classifying them as metals, nonmetals, or metalloids. Background: Physical Properties: – properties that can be observed without changing the identity of a substance Chemical Properties: – properties that are observed while altering the identity of the substance involved Metals: – elements that are usually silver-gray in color, with the exception of copper and gold – solid at room temperature except mercury, which is a liquid – lustrous or shiny appearance and reflect light when polished – can be bent or hammered flat (malleable – can be drawn into wire – good conductors of heat and electricity – usually show reaction with acids – usually high melting point Nonmetals: - found to the right of the zigzag line on the periodic table - usually dull in appearance and do not reflect light - many brittle and cannot be hammered into sheets - poor conductors of electricity and heat - show little or no reaction with acids - low melting points - exist as either solids or gas, bromine is an exception, it is a liquid Metalloids: - found on both sides of the zigzag line on the periodic table except for aluminum - show properties of both metals and nonmetals - are not good conductors of electricity - when mixed with small amounts of other elements the conductivity of metalloids increases Note: There are many exceptions to the rules for classifying elements. SAFETY CAUTION Safety Precautions: Perform this lab activity in a well-ventilated laboratory. Hydrochloric acid solution is corrosive to eyes and skin. Cupric chloride solution is toxic if ingested. Avoid contact of all chemicals with eyes and all body tissues.
    [Show full text]
  • Chapter 6. Periodic Relationships Among the Elements
    July 29, 2009 [PROBLEM SET FROM R. CHANG TEST BANK] Chapter 6. Periodic Relationships Among the Elements Student: _____________________________________________________________________ 1. The nineteenth century chemists arranged elements in the periodic table according to increasing A. atomic number. B. number of electrons. C. atomic mass. D. number of neutrons. E. nuclear binding energy. 2. Mendeleev proposed the existence of an unknown element that he called eka- aluminum. This element is now called A. gallium. B. silicon. C. magnesium. D. boron. E. germanium. 3. The chief contribution of physicist Henry Moseley to atomic theory was A. the discovery of the periodic law. B. the determination of the charge of the proton. C. the measurement of the atomic numbers of the elements. D. the determination of the electric charge of the electron. E. the discovery of the law of octaves. 4. The elements in Group 7A are known by what name? A. transition metals B. halogens C. alkali metals D. alkaline earth metals E. noble gases www.kau.edu.sa/aasiri2 Page 1 July 29, 2009 [PROBLEM SET FROM R. CHANG TEST BANK] 5. The elements in Group 2A are known by what name? A. transition metals B. halogens C. alkali metals D. alkaline earth metals E. noble gases 6. The alkali metal elements are found in _______ of the periodic table. A. Group 1A B. Group 2A C. Group 3A D. Period 7 E. Period 1 7. Which one of these elements is a transition element? A. Sr B. Pb C. As D. Fe E. H 8. Which one of these elements is a transition element? A.
    [Show full text]
  • 4 Nonmetals and Metalloids
    0072_sx09_K_te_Ch03.fm Page 98 Sunday, January 13, 2008 1:38 PM 4 Nonmetals and Nonmetals and Metalloids 4 Metalloids Objectives After this lesson, students will be able to Reading Preview K.3.4.1 Describe the properties of Key Concepts What Are the Properties of Charcoal? nonmetals. • What are the properties of 1. Break off a piece of charcoal and roll it between your fingers. K.3.4.2 Tell how metalloids are useful. nonmetals? Record your observations. • How are the metalloids useful? 2. Rub the charcoal on a piece of paper. Describe what happens. 3. Strike the charcoal sharply with the blunt end of a fork. Target Reading Skill Key Terms Describe what happens. • nonmetal Using Prior Knowledge Explain that using 4. When you are finished with your investigation, return the • diatomic molecule • halogen prior knowledge helps students connect charcoal to your teacher and wash your hands. • noble gas • metalloid what they already know to what they are • semiconductor Think It Over about to read. Classifying Charcoal is a form of the element carbon. Would Target Reading Skill you classify carbon as a metal or a nonmetal? Use your Answers observations from this activity to explain your answer. Sample answers: Using Prior Knowledge Before you read, write what you know What You Know about the properties of nonmetals 1. Nonmetals are not shiny. and metalloids in a graphic Life on Earth depends on nonmetals. All organisms are made 2. organizer like the one below. As from compounds of carbon. The air you and other living things Nonmetals are not magnetic.
    [Show full text]
  • Summary of Properties of Elements in the Periodic Table
    An Overview of The Properties of Elements in The Periodic Table The Key Atomic Properties Atomic properties that are critical to the behavior of elements are electron configuration, atomic size, ionization energy, electron affinity, and electronegativity. The electron configuration (nl#: spdf notation) gives the distribution of electrons in principal energy levels and sublevels of an atom. The principal quantum number n determines the energy and relative distance of orbitals from the nucleus; The quantum number l yields s, p, d, and f notations, which describes the shape of orbitals in the sublevel; The superscript (#) tells the number of electrons in the sublevels. Electrons in inner levels or shells tend to shield outer electrons from the full nuclear charge, which is reduced to effective nuclear charge (Zeff). Electrons that have a greater penetration shield others more effectively. For example, electrons in level n = 1 shield those in level n = 2 very effectively, and those in n = 1 and n = 2 shield electrons in level n = 3. Electrons at the same level, but in different sublevels, also shield other electrons to some extent. The extent of penetration and shielding effect is in the order: s > p > d > f. The effective nuclear charge (Zeff) greatly influences atomic properties. In general, Zeff increases significantly across a period (left-to-right) Zeff decreases slightly down a group. In the periodic table, elements are divided into: the s-block (contains reactive metals of Group 1A (1) and 2A (2)), the p-block (contains metals and nonmetals of Group 3A (13) through 8A (18)), the d-block (contains transition metals (Group 3B (3) through Group (2B (12)), and the f-block (contains lanthanide and actinide series or inner transition metals).
    [Show full text]