Question

Why white phosphorous catches fire when kept in air?

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Answer 1

Answer:

because it's highly reactive with air, oxygen and water

hope it may help you

Answer 2

$\large{\bf{\underline{\underline{HEY\:USER}}}}$

$\large{\bf{\underline{\underline{ANSWER}}}}$

Phosphorus is highly reactive metal,it spotaneousely ignite at about 30°c in moist air.It is usually stored in kerosene bag,or under water to prevent it from air.It evolve hydrogen when came in contact with the Air.

Thank You!.