Q.

Phosphorus is kept in water because –

A. its ignition temperature is very high
B. its ignition temperature is very low
C. its critical temperature is high
D. its critical temperature is low
Answer» B. its ignition temperature is very low
Explanation: The allotropic form of Phosphorus (white phosphorus) is less stable and therefore highly reactive because of angular strain in P4 molecule where the angles are only 600.
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