D-And F-Block Elements Ques 276
Question: Which ion has maximum magnetic moment
[AIIMS 1983; MP PMT 1990]
Options:
A) $ {{V}^{+3}} $
B) $ M{{n}^{+3}} $
C) $ F{{e}^{+3}} $
D) $ C{{u}^{+2}} $
Show Answer
Answer:
Correct Answer: C
Solution:
| S.No. | Outer configuration | No.of unpaired e- | Color of ion | Magnetic moment | |
|---|---|---|---|---|---|
| $ {{V}^{+3}} $ | $ 3d^{2} $ | 2 | Green | 2.76 | |
| $ M{{n}^{+3}} $ | $ 3d^{4} $ | 4 | Violet | 1.9 | |
| $ F{{e}^{+3}} $ | $ 3d^{5} $ | 5 | Yellow | 5.96 | |
| $ C{{u}^{+2}} $ | $ 3d^{9} $ | 1 | Blue | 1.9 |
