Assertion :The properties of phosphorus should be closer to those of sulfur than to those of nitrogen. Reason: Phosphorus and nitrogen are in the same row of the periodic table.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is D Both Assertion and Reason are incorrect
Assertion is False: Generally, elements belonging to same column of periodic table exhibit same properties. Phosphorus and nitrogen exhibit similar properties unlikely to sulphur which belongs to group 14.

Reason is False: Nitrogen lies in second row of periodic table and Phosphorus lies in third row of periodic table. Both of them belong to same column. Hence, they are not in the same row of periodic table.

Hence, answer is $D$ .

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Similar questions

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Δ_{f} H^{o}

for white phosphorus has been taken to be zero, whereas black phosphorus is the most stable allotrope of phosphorus and this is the only exception.

REASON:
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(a) Both assertion and reason are correct and the reason is correct explanation of assertion
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(c) Assertion is correct, but reason is incorrect
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(e) Assertion is incorrect but reason is correct.

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