Most teachers will agree that a perfect answer key is rare. The reasons are as numerous as the errors: typos, strained eyes, misread questions, etc. If your answers do not agree, consult a good chemistry teacher about any questions you might have. I would appreciate knowing about any errors that you might find.
Short Answer
1. odd filling order beginning with element 19; splitting of the spectral lines; inconsistencies in the ionization potential.
2.
a) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d6.
b) 1s2, 2s2, 2p6, 3s2, 3p6, 4s2, 3d10, 4p6, 5s2, 4d10, 506, 4f9.
3. Same electronic configuration. fluoride ion, oxide ion, and neon
4.
|
n
|
l
|
m
|
s
|
| 3 | 1 | -1 | +1/2 |
| 3 | 1 | -1 | -1/2 |
| 3 | 1 | 0 | +1/2 |
| 3 | 1 | 0 | -1/2 |
| 3 | 1 | +1 | +1/2 |
| 3 | 1 | +1 | -1/2 |
| 3 | 2 | -2 | +1/2 |
| 3 | 2 | -2 | -1/2 |
| 3 | 2 | -1 | +1/2 |
| 3 | 2 | -1 | -1/2 |
| 3 | 2 | 0 | +1/2 |
| 3 | 2 | 0 | -1/2 |
| 3 | 2 | 1 | +1/2 |
| 3 | 2 | 1 | -1/2 |
| 3 | 2 | 2 | +1/2 |
| 3 | 2 | 2 | -1/2 |
5. S; Sn, Sn
6. 4348
7. emitted; 25.7 ev; 48.3 nM (not visible)
Extra Credit
1. Error: should reference question 6 not 8. Answer: about 13.6 ev
2. Error: X32 should be X2- . Answer: Group IV
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