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Assertion: SiF(6)^(2-) is known but SiCl...

Assertion: `SiF_(6)^(2-)` is known but `SiCl_(6)^(2-)` is not.
Reason: Size of fluorine is small and its lone pair of electrons intersects with d-orbitals of `Si` strongly.

A

If both assertion and reason are true and the reason is the correct explanation of the assertion.

B

If both assertion and reason are true but reason is not the correct explanation of the assertion.

C

If assertion is true but reason is false.

D

If the assertion and reason both are false.

Text Solution

Verified by Experts

The correct Answer is:
A
(i) Due to smaller size of F, steric repulsions will be less in `SiF_(6)^(2-)`
(ii) Interaction of F lone pair electrons with Si is stronger than that of chlorine lone pairs.
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