Question

Among the following metal carbonyls, the C–O bond order is lowest in
(a) [Mn(CO)₆]⁺
(b) [Fe(CO)₅]
(c) [Cr(CO)₆]
(d) [V(CO)₆]⁻

Answer 1

A metal-containing ring like that shown is called a chelate ... more stable than the corresponding complexes of ... this increase in stability is called the chelate effect

Answer 2

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Ans

option.aa

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