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Question
Assertion: \[\ce{SF6}\] cannot be hydrolysed but \[\ce{SF4}\] can be.
Reason: Six \[\ce{F}\] atoms in \[\ce{SF6}\] prevent the attack of \[\ce{H2O}\] on sulphur atom of \[\ce{SF6}\].
Options
Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
Both assertion and reason are correct statements, but reason is not the correct explanation of the assertion.
Assertion is correct, but reason is wrong statement.
Assertion is wrong but reason is correct statement.
Both assertion and reason are wrong statements.
Solution
Both assertion and reason are correct statements, and reason is the correct explanation of the assertion.
Explanation:
Here, the \[\ce{S}\] atom is surrounded by 6F atoms, so it's completed for \[\ce{H2O}\] attack \[\ce{SF6}\], but in case of \[\ce{SF4}\], it's surrounded by 4F atoms, so it's to attack \[\ce{H2O}\].
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