D-And F-Block Elements Ques 379
Question: The magnetic moment of a metal ion of first transition series is 2.83 $ BM $ . Therefore it will have unpaired electrons
Options:
A) 6
B) 4
C) 3
D) 2
Show Answer
Answer:
Correct Answer: D
Solution:
$ \mu =\sqrt{n(n+2)} $ (m = magnetic moment) (n = no.
of unpaired electron).
$ 2.83=\sqrt{n(n+2)} $
$ n(n+2)=8 $
$ n^{2}+2n-8=0 $
$ n=2 $ .
