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Assertion (A) Elementary phosphorus exis...

Assertion (A) Elementary phosphorus exists in three principal allotropic forms , ie .white (or yellow),red (or violet ) and black.
Reason (R ) Of the three forms, white phosphorus is the most important and most reactive.

A

If both assertion and reason are true, and is the correct explanation of the assertion.

B

If both assertion and reason are true, but reason is not the correct explanation of the assertion.

C

If assertion is true, but reason is false.

D

If both assertion and reason are false

Text Solution

Verified by Experts

The correct Answer is:
B
Correct explanation. Depending upon whether `P_(4)` molecules exist as discrete molecules held together by weak van der waals forces or are covalently bonded with one another to form polymeric structures, phosphorus exists in three allotropic forms.
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