<p>Chapter 4 Practice Skills Name______Arrangement of Electrons in Atoms</p><p>1. Identify each of indicated the elements:</p><p> a) 1s22s22p63s23p4</p><p> b) [Ar] 3d64s2</p><p> c) [Rn]5f77s2</p><p> d) contains 6 electrons in its fifth and outer main energy level</p><p> e) contains 3 electrons in its electron dot symbol in and has a principal quantum number of 4.</p><p> f) has 18 inner shell electrons and 1 outer shell electron</p><p>2. a) Identify the element that has 4 electrons in the p sublevel in its sixth main energy level. (6s26p4)</p><p> b) What is the total number of electrons in the sixth main energy level for atoms of this element?</p><p> c) Write the electron dot diagram for this element.</p><p> d) Name the element in the third period with the same number of outermost electrons.</p><p>3. How many electrons can each of the following main energy levels hold?</p><p> a) n = 1 b) n = 3 c) n = 5</p><p>4. The fact that the 4s sublevel fills before the 3d sublevel is an example of (a) the Aufbau Principle; (b) Hund’s Rule; (c) The Pauli Exclusion Principle; (d) line emission spectrum 5. The fact that nitrogen has 3 unpaired electrons is an example of (a) the Aufbau Principle; (b) Hund’s Rule; (c) The Pauli Exclusion Principle; (d) line emission spectrum.</p><p>6. How many unpaired electrons does Iodine have?</p><p>7. Draw the electron dot diagram for the following elements:</p><p> a) Se b) Pb c) P</p><p>8. How many inner shell electrons do the following elements have?</p><p> a) Se b) Pb c) P</p><p>9. List the order in which orbitals fill, from the 1s to the 7p orbital.</p><p>10. Draw the orbital notation for each of the following:</p><p> a) Be+2</p><p> b) Mn</p><p>11. Draw the Noble gas orbital notation for each of the following:</p><p> a) Re b) Pm 12. Write the electron configuration for each of the following:</p><p> a) Be+2</p><p> b) Mn</p><p>13. Write the Noble gas electron configuration for each of the following:</p><p> a) Re</p><p> b) Pm</p>