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1.

Assertion SF_(6) is not a stable molecule. Reason . A stable molecule must have 8 electrons around the central atom, i.e., octet rule should be satisfied.

Answer»

If both ASSERTION and reason are correct, and reason is the correct explanation of the assertion.
If both assertion and reason are correct , but reason is not the correct explanation of the assertion.
If assertion is correct, but reason is incorrect .
If both assertion and reason are incorrect.

Solution :Correct A. `SF_(6)` is a stable MOLECULE .
Correct R . Some molecules are electrons deficinet
or have expended OCTET, yet they are stable .


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