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Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R) Assertion (A): Boron is unable to form BF6^3−. Reason (R): Size of B is very small. In the light of the above statements, choose the correct answer from the options given below:

1. Both (A) and (R) are true and (R) is the correct explanation of (A)
2. Both (A) and (R) are true but (R) is not the correct explanation of (A)
3. (A) is true but (R) is false
4. (A) is false but (R) is true

Correct answer: (A) is false but (R) is true

Solution

The assertion is incorrect because boron can form BF6^3− under certain conditions, while the reason is accurate as boron's small size contributes to its inability to accommodate larger coordination numbers in some complexes.

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