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Among the complex ions given below which...

Among the complex ions given below which is/are outar-orbitals complex-I- `[Co(CN)_6]^(4-)`II-`[ Fe(H_2O)_6]^(2+)` III-`[Fe F_6]^(3-)` IV-`[CoF_6]^(3-)`

A

II,III,IV

B

II,III only

C

I,IV only

D

II only

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The correct Answer is:
A
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[Fe(H_2O)_6]^(2+)and [Fe(CN)_6]^(4-) differ in :

The magnetic moment of complex given below are in the order: (I) [Ni(CO)_(4)] (II) [Mn(CN)_(6)]^(4-) (III) [Cr(NH_(3))_(6)]^(3+) (IV) [CoF_(6)]^(3-)

The complex ion [Fe(CN)_(6)]^(4-) contains:

In the complex K_2Fe[Fe(CN)_6]

Among the following, the most stable complex is (i). [Fe(H_2O)_6]^(3+) (ii). [Fe(NH_3)_6]^(3+) (iii). [Fe(C_2O_4)_3]^(3-) (iv). [FeCl_6]^(3-)

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