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Allotropes of Phosphorus

Which of the ...

Question

Which of the following is least reactive?

A

White phosphorus

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B

Yellow phosphorus

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C

Red phosphorus

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D

Black phosphorus

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Solution

The correct option is B Black phosphorus
Black phosphorus is thermodynamically most stable form of phosphorus as it is a highly polymerised form of phosphorus. Hence it is least reactive.

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Allotropes of Phosphorus

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