Question

which of the following shows acidic nature?​

Answer 1

The given compound are alkane, alkane and alkyne, it is known that in alkanes carbon atoms is Sp3 hybridized in alkanes carbon atoms is Sp2 hybridized and alkyne carbon atoms is Sp hybridized.

This means that in alkanes -character is very less whereas in alkynes S-character is very high since it is known that more is the S-character present in a compound more will be it's acidic character.

Hence, we can conclude that out of given options C2H2 compound shows acidic nature