1.

A metal "M" reacts with nitrogen gas to afford "M_3N". "M_3N" on heating at high temperature gives back "M" and on reaction with water produces gas "B". Gas "B" reacts with aqueous CuSO_4 to form deep blue compound. "M" and"B" are respectively......

Answer»

Na and `NH_3`
Li and `NH_3`
Ba and `N_2`
AL and `N_2`

Solution :`6LI + N_(2) to 2L_(3)N overset(Delta)to 6Li + N_(2)`
`2Li_(3)N to 6LiOH + 2NH_(3) overset(Cu^(2+)) to UNDERSET("DEEP blue")([Cu(NH_(3))_(4)]^(2+))`


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