Question
Chemistry Question on Occurrence Of Metals
The metal ion (in gaseous state) with lowest spin-only magnetic moment value is
A
V2+
B
Ni2+
C
Cr2+
D
Fe2+
Answer
V2+
Explanation
Solution
The correct option is(B): Ni2+
| Valence shell Configuration | Unpaired electrons |
|---|---|
| V2+ → 3 d 34 s 0 | n = 3 |
| Ni2+ → 3 d 84 s 0 | n = 2 |
| Cr2+ → 3 d 44 s 0 | n = 4 |
| Fe2+ → 3 d 64 s 0 | n = 4 |
Since Ni2+ has least number of unpaired electrons. Hence Ni2+ will have lowest spin only magnetic moment Value.