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CGP EDU Academic Team
Published on: August 14, 2026
Which of the following is true for the complex Co(NO 2 )(Cl) 2 .5NH 3 (Co is in +III oxidation state) ?
Text Solution
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(a,b,c,d) [Co(NH 3 ) 5 (NO 2 )]Cl 2 and [Co(NH 3 ) 5 Cl]Cl (NO 2 ) are ionisation isomers.
[Co(NH 3 ) 5 (NO 2 )]Cl 2 and [Co(NH 3 ) 5 (ONO)]Cl 2 are linkage isomers.
Cobalt in +3 oxidation state has 3d 6 configuration which has higher CFSE. So the complex is inner orbital (i.e. d 2 sp 3 hybridisation) and diamagnetic.
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