How many no. of active hydrogen atoms are present in a compound (mol. Mass 90) 0.45 g of which when treated with Na metal liberates 112 ml of the H_(2) gas at STP

How many no. of active hydrogen atoms are present in a compound (mol.

1.	How many no. of active hydrogen atoms are present in a compound (mol. Mass 90) 0.45 g of which when treated with Na metal liberates 112 ml of the H_(2) gas at STP
Answer» ANSWER :no. of activef H=2