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Question

Verbal Reasoning Question on Coordination Compounds

Which among the following compounds will show the least C-O stretching frequency?

A

[Fe(CO)4]2−[Fe(CO)_4]^{2-}

B

[Co(CO)4]−[Co(CO)_4]^{-}

C

[Mn(CO)6]+[Mn(CO)_6]^{+}

D

[Cr(CO)6][Cr(CO)_6]

Answer

[Fe(CO)4]2−[Fe(CO)_4]^{2-}

Explanation

Solution

The correct answer is (A) : [Fe(CO)4]2−[Fe(CO)_4]^{2-}