Agenda 10/31/2018 Quick Check (2) The Modern Periodic Table Extended (Long form)Periodic Table spdf blocks Aufbau (building up) the elements - interactive link Main Groups - representative elements Trends In Periodic Table - Melting points Quick Check (2) Copy the question. 1. Identify this atom: 1s22s22p6 Explain how you decided. 2. Identify this atom:1s22s22p63s23p6 Explain how you decided. Long Form Periodic Table Color code s block f block p block d block Long Form Periodic Table Color code s block f block p block d block Transition elements Long Form Periodic Table Color code s block f block p block d block Inner Transition metals - lanthanides and actinides Fold to hide the transition elements - Put a title on this format : Main Group Elements (Representative elements) http://howjsay.com/pronunciation-of-de-broglie https://www.youtube.com/watch?v=b69iJ36tCd8 Building Elements - together https://www.learner.org/interactives/periodic/buildin g/ Quantum (wave) mechanical model of atom gives us mathematically predicted probability maps that we call: Atomic orbitals s p d f g Filling orbitals online interactive Energy level n = 3 (after 2 electrons go in n =4 ) Actually Contains 3s orbital, 3p orbital AND a 3d orbital (5 suborbitals) ? + So n= 3 level can really accommodate up to 18 electrons Electrons and PT: transition metals 1st row Element Grp # Variable valence Electron Electron configuration (full) electrons configuration (simplified) 21. Sc 3 2.8.9.2 1s22s22p63s23p63d14s2 22. Ti 4 2.8.10.2 1s22s22p63s23p63d24s2 23. V 5 2.8.11.2 1s22s22p63s23p63d34s2 24. Cr 6 2.8.13.1 1s22s22p63s23p63d54s1 25. Mn 7 2.8.13.2 1s22s22p63s23p63d54s2 26. Fe 8 2,8.14.2 1s22s22p63s23p63d64s2 27. Co 9 2.8.15.2 1s22s22p63s23p63d74s2 28. Ni 10 2.8.16.2 1s22s22p63s23p63d84s2 29. Cu 11 2.8.18.1 1s22s22p63s23p63d94s1 30. Zn 12 2. 8 18.2 1s22s22p63s23p63d104s2 “Left-step” Periodic Table - Charles Janet, 1929 Reminders? 1. What are columns in the periodic table generally called? 2. Give the official name for one of the columns and state which number column it is. 3. What are rows on the periodic table called and how many are there? Reminders. 1. Columns in the periodic table are generally called Groups. There are 18 numbered groups. Reminders 2. Group 1 Alkali metals Group 2 Alkaline earth metals Group 17 Halogens Grp 18 Noble gases Reminders 3. Rows on the periodic table are called Periods and at the time of writing there are 7 periods. Trends in Periodic Table: Melting Points of Elements Melting point for a crystalline solid is the temperature at which the forces holding a crystal lattice together are broken and it becomes a liquid. crystalline solid - suggests a pure substance, element or compound. x axis - independent variable - atomic number 0 - 40 y axis - dependent variable, melting point (oC) ________________________ Scale issues - differences in orientation https://www.desmos.com/calculator/xeyyymysor Melting Points of First 40 Elements vs. atomic number ● Use Mrs. D-B’s Graphing Checklist - how I will grade your graph. ● Scales for x and y produce the largest possible graph on the paper provided. ○ Requires planning - use pencil. ● Plot 2 graphs - one with paper in portrait orientation and one in landscape orientation Homework Finish 2 Melting point graphs Heads up Unit 3 Electrons and Periodic Table Will be on Tuesday November 13th (after Nov 12th Veterans Day Holiday).