Co-Ordination Compounds Question 271
Question: The magnetic moment of the complex anion $ {{[Cr(NO)(NH_3){{(CN)}_4}]}^{2-}} $ is:
Options:
A) 5.91 BM
B) 3.87 BM
C) 1.73 BM
D) 2.82 BM
Show Answer
Answer:
Correct Answer: D
Solution:
In $ {{[Cr( NO )( NH_3 ){{( CN )}_4}]}^{2-}}, $
$ C{r^{2+}}(d^{4}) $ is given as: i.e., 2 unpaired electrons $ \mu =\sqrt{2(2+2)}=\sqrt{8}=2.82,BM $
