Sodium forms a crystalline ionic solid with dihydrogen . The solid is non-volatile and non-conducting in nature. It reacts violently with water to produce dihydrogen gas. Write the formula of this compound and its reaction with water. What will happen on electrolysis of the melt of this solid.

Sodium forms a crystalline ionic solid with dihydrogen . The solid is

1.	Sodium forms a crystalline ionic solid with dihydrogen . The solid is non-volatile and non-conducting in nature. It reacts violently with water to produce dihydrogen gas. Write the formula of this compound and its reaction with water. What will happen on electrolysis of the melt of this solid.
Answer» Solution :Sodium reacts with dihydrogen to form sodium hydride which is a CRYSTALLINE ionic solid. `2Na+H_(2) to 2Na^(+) H^(-)` It reacts with `H_(2)O` to produce `H_(2)` gas `2NaH+2H_(2)O to 2NAOH + 2H_(2)` Although `Na^(+)H^(-)` does not conduct electricity in the solid state but the ELECTROLYSIS of its melt PRODUCES `H_(2)` at the anode and Na at the cathode `Na^(+)H^(-)(l) overset("Electrolysis")to overset("At cathode")(2Na(l))+ overset("At anode")(H_(2)(g))`