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Which of the following order is not corr...

Which of the following order is not correct?

A

`[Cr(NH_(3))_(6)]^(+3) gt [Mn(CN)_(6)]^(-3) gt [V(CO)_(6)]` spin m.m.

B

`[Co(CN)_(6)]^(-3) gt [Co(NH_(3))_(6)]^(+3) gt [Co(H_(2)O)_(6)]^(+3) Delta_(0)` value

C

`[Ni(CO)_(4)] gt [Co(CO)_(4)]^(-) gt [Fe(CO)_(4)]^(-2) ` (M-C `pi` bond strength)

D

`[Ni(NH_(3))_(4)]^(+2) lt [Ni (e n) (NH_(3))_(2)]^(+2) lt [Ni(e n)_(2)]^(+2)` (Thermodynamic stability)

Text Solution

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The correct Answer is:
C
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