NEET Chemistry Crystal Field Theory Assertion Reason Question
Assertion (A): In the complex ion [Co(en)3]3+, the coordination number of cobalt is 6. | Reason (R): Ethane-1,2-diamine (en) is a didentate ligand, contributing to the coordination number.
Both A and R are true, and R is the correct explanation of A.
Both A and R are true, but R is not the correct explanation of A.
A is true but R is false.
A is false.
Correct Answer
Detailed Explanation
In [Co(en)3]3+, the coordination number of cobalt is 6 because ethane-1,2-diamine (en) is a didentate ligand, meaning it can bind to the central metal atom through two sites, thus contributing to the coordination number.
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