NEET2018Chemistry-Chemical Bonding

NEET 2018 Chemistry Molecular Structure MCQ Question

Type: MCQ-conceptual-Medium-Class 11

Which one of the following elements is unable to form MF₆³⁻ ion?

A

Ga

B

Al

C

B

D

In

Correct Answer

Option C

Detailed Explanation

Boron (B) is unable to expand its octet due to the absence of d-orbitals, thus it cannot form MF₆³⁻ ions.

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