Question

why sodium reacts vigorously catches fire if kept in open air???​

Answer 1

Answer:

This is because sodium os highly reactive metal.

I hope thisay helpful for uu..

Answer 2

Answer:

due to condensed water or water vapour in the air

Explanation:

try an example :

get some ice in a glass and look at its outer surface you could see condensed water depending on humidity of the nature.