question_answer

A metal (A) on heating in nitrogen gas gives compound B. B on treatment with \[{{H}_{2}}O\] gives a colourless gas which when passed through \[CuS{{O}_{4}}\] solution gives a dark blue-violet coloured solution. A and B respectively, are [JEE MAIN Held on 08-01-2020 Evening]

A) Mg and \[M{{g}_{3}}{{N}_{2}}\]

B) Na and \[N{{a}_{3}}N\]

C) Mg and \[Mg{{\left( N{{O}_{3}} \right)}_{2}}\]

D) Na and \[NaN{{O}_{3}}\]

Correct Answer: A

Solution :