Assertion: All F-S-F angle in SF4 are greater than 90° but less than 180°.

Assertion: All F-S-F angle in SF4 are greater than 90° but less than 180°.
Reason: The lone pair-bond pair repulsion is weaker than bond pair-bond pair repulsion.
(a) If both Assertion and Reason are correct and the Reason is a correct explanation of the Assertion.
(b) If both Assertion and Reason are correct but Reason is not a correct explanation of the Assertion.
(c) If the Assertion is correct but Reason is incorrect.
(d) If both the Assertion and Reason are incorrect.
(e) If the Assertion is incorrect but the Reason is correct.

(d) If both the Assertion and Reason are incorrect.
Explanation:
SF4 has see-saw type structure in which bond angles are different between different S—F atoms. It has non-planar structure.
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