NEET Chemistry Crystal Field Theory Assertion Reason Question
Assertion (A): The geometry of [MnBr4]2– is tetrahedral. | Reason (R): The spin only magnetic moment of [MnBr4]2– is 5.9 BM, indicating the presence of five unpaired electrons.
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
Both the assertion and reason are correct. The NCERT context states that a magnetic moment of 5.9 BM indicates five unpaired electrons, which are consistent with a tetrahedral geometry for [MnBr4]2–.
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