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Question

Assertion :Tin (Sn) exhibits +2 and +4 oxidation states only and not +3 oxidation state. Reason: Inert pair effect of electron pair in s-orbital is responsible.

A
Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
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B
Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
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C
Assertion is correct but Reason is incorrect
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D
Assertion is incorrect but Reason is correct
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Solution

The correct option is A Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

Down the group 14, the oxidation state +2 becomes common such as SnCl2,PbO and Pb2+.With tin, the +4 state is still more stable than the +2, but by the time you get to lead, the +2 state is the more stable and dominates the chemistry of lead.

+3 is not stable because of the Inert pair effect of electron pair in s-orbital.

In CH4 carbon is not in +4 but is in 4 state as carbon is more electronegative than hydrogen.


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