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Sodium forms a crystallisation ionic sol...

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

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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))`
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