D-And F-Block Elements Ques 248

Question: Atomic number of Cr and Fe are 24 and 26 respectively. Which of the following is paramagnetic with the spin of electron

[CBSE PMT 2002]

Options:

A) $ {{[Cr{{(NH_3)}_6}]}^{+3}} $

B) $ [Fe{{(CO)}_5}] $

C) $ {{[Fe{{(CN)}_6}]}^{-4}} $

D) $ [Cr{{(CO)}_6}] $

Show Answer

Answer:

Correct Answer: A

Solution:

All metal carbonyls are diamagnetic cyanide complexes are also diamagnetic.



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