1.

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

Answer»

If both ASSERTION and REASON are TRUE, and reason is the CORRECT explanation of the assertion.
If both assertion and reason are ture, but reason is not the correct explanantion of the assertion.
If assertion is true, but reason is false.
If both assertion and reason are false

Answer :A


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