Q.

Which of the following is not correct for black phosphorus?

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a

It can be α or β form

b

It burns when kept in air to give P2O5

c

It can have monoclinic or rhombohedral crystalline structure

d

White or red phosphorus can be converted to black form

answer is B.

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Detailed Solution

Black phosphorus burns only on heating above 673K, in air.
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