Complex in which central atom contain minimum electron in valence shell (1) [Co(CO)4]+ (2) [Mn(CO)5]- (3) [V(CO)6] (4) [Cr(CO)6]

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Q. Consider the following complexes

[V (C O)_{6}]^{-}, [C r (C O)_{6}]

and

[M n (C O)_{6}]^{+}

. Then incorrect statement(s) about metal carbonyls is /are

We have the number of outer shell valence electrons of 4 atoms. Which among them will have the least electron affinity?
Atom 1: 7
Atom 2: 2
Atom 3: 6
Atom 4: 3

Q. Which amongst the following metal carbonyls are inner orbital complexes with diamagnetic property?
(I)

N i (C O)_{4}

; (II)

F e (C O)_{5}

; (III)

V (C O)_{6}

; (IV)

C r (C O)_{6}

Select the correct answer from the codes gives below:

Q. In which of the following species central atom is not surrounded by exactly 8 valence electrons ?

Q. Among the metal carbonyls

[M n (C O)_{6}]^{+}, [T i (C O)_{6}], [C r (C O)_{6}]

and

[V (C O)_{6}]^{-}

the

C - O

bond order would be lowest in :

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