CHE 111    Answers for Electronic Structure & Periodic Table Practice

1) 462 nm,  4.31 x 10^-19 J

2a)  1s²2s²2p⁶3s²3p³        5b) 1s²2s²2p⁶3s²3p⁶4s²3d³         5c) 1s²2s²2p⁶

3a)   [Ar]4s²          6b) [Ne]3s²3p⁵

4) (code: | means up arrow, ! means down arrow; also I prefer to see these diagrams vertically spaced, but for convenience here I am horizontally spacing it.)

|!        |!         |!  |!  |!         |!         |!  |   | 
1s        2s         2p            3s         3p         Remember Hund's Rule

5)   (Ca²⁺ & K⁺)         (Mg²⁺, Ne, & F^-)

6) 4,3

7) O, S, Se, I

8) 2p

9) K, Ca, Ge, Br

10) (3,0,0,1/2)