Be sure to number the blanks and realize that the -1/2 means it is a pairing electron! The element has a configuration of 5p4; so it must be tellurium.
Example
Complete the following table:
| Element |
Valence electron configuration |
Valence orbital notation |
Set of quantum numbers |
|
|
 |
|
|
[Ar] 3d6 |
|
|
|
|
 |
|
|
|
|
5, 1, 0, +1/2 |
|
4p5 |
|
|
|
|
|
6, 0, 0, -1/2 |
| Answer: element |
Valence electron configuration |
Valence orbital notation |
Set of quantum numbers (n, l, ml, ms) |
| K |
[Ar] 4s1 |
|
4, 0, 0, +1/2 |
| Fe |
[Ar] 4s23d6 |
|
3, 2, -2, -1/2 |
| N |
1s22s22p3 |
 |
2, 1, 1, +1/2 |
| Sn |
[Kr] 5s24d105p2 |
 |
5, 1, 0, +1/2 |
| Br |
[Ar] 4s23d104p5 |
 |
4, 1, 0, -1/2 |
| Ba |
[Xe] 6s2 |
 |
6, 0, 0, -1/2 | |
