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Asseration:Although:Although PF(5),PCl(5...

Asseration:Although:Although `PF_(5),PCl_(5)` and `PBr_(5)` are known, the pentahalides of nitrogen have not been observed.
Reason: Phosphorus has lower electronegative than nitrogen.

A

If both assertion and reason are correct and reason is correct explanation for assertion.

B

If both assertion and reason are correct but reason is not correct explanation for assertion.

C

If assertion is correct but reason is incorrect.

D

If both assertion and reason are incorrect.

Text Solution

Verified by Experts

The correct Answer is:
B
Correct explanation . Nitrogen cannot show a covalency of 5 in its compound due to the absence d-orbitals in the valence shell.
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Although PF_5, PCl_5 and PBr_5 are known, the pentahalides of nitrogen have not been observed. Phosphorous has lower electronegativity than nitrogen.

Assertion : Pentahalides of phosphorus are known but not those of nitrogen. Reason : Phosphorus has lower electronegativity than nitrogen.

Assertion : NH_(3) is less basic than PH_(3) Reason: Nitrogen is more electronegative than phosphorus.

Assertion: PCI_(5) in aqueous medium is a better oxidant than NCl_(3) Reason: Phosphorous has vacant d-orbitals while nitrogen has not.

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