NEET UG CHEMISTRY MCQ: CHEMICAL BONDING & MOLECULAR STRUCTURE

1 Easy

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Analyzing +4 | -1

Which among the following can have largest

C - O

bond length?

View answer and explanation

Correct option: D

{\left[ {Cr{{\left( {CO} \right)}_5}} \right]^{2 - }}

Option D (

{\left[ {Cr{{\left( {CO} \right)}_5}} \right]^{2 - }}

) is correct because the negative charge on the metal increases back-bonding to CO, weakening the C-O bond and thus increasing its length.

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