NEET2024Chemistry-Coordination Compounds

NEET 2024 Chemistry Magnetic Properties Assertion Reason Question

Type: Assertion Reason-assertion-Medium-Class 12

Given below are two statements:

Statement I: Both [Co(NH₃)₆]³⁺ and [CoF₆]³⁻ complexes are octahedral but differ in their magnetic behaviour.

Statement II: [Co(NH₃)₆]³⁺ is diamagnetic whereas [CoF₆]³⁻ is paramagnetic.

In the light of the above statements, choose the correct answer from the options given below:

A

Statement I is true but Statement II is false.

B

Statement I is false but Statement II is true.

C

Both Statement I and Statement II are true.

D

Both Statement I and Statement II are false.

Correct Answer

Option C

Detailed Explanation

Statement I is true as both complexes are octahedral. Statement II is true because [Co(NH₃)₆]³⁺ is low-spin and diamagnetic, while [CoF₆]³⁻ is high-spin and paramagnetic.

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