A) \[N{{H}_{3}},{{N}_{2}},M{{g}_{3}}{{N}_{2}}\]
B) \[{{N}_{2}},N{{H}_{3}},MgNH\]
C) \[{{N}_{2}},{{N}_{2}}{{O}_{5}},Mg{{(N{{O}_{3}})}_{2}}\]
D) \[N{{H}_{3}},N{{O}_{2}},Mg{{(N{{O}_{2}})}_{2}}\]
Correct Answer: A
Solution :
[a] \[Ca(NH)+2{{H}_{2}}O\xrightarrow{{}}\] \[Ca{{(OH)}_{2}}+\underset{[b]}{\mathop{N{{H}_{3}}}}\,(g)\] \[\underset{[b]}{\mathop{2N{{H}_{3}}}}\,+3CaOC{{l}_{2}}\xrightarrow{{}}\] \[\underset{[c]}{\mathop{{{N}_{2}}}}\,(g)+3CaC{{l}_{2}}+3{{H}_{2}}O\] \[\underset{[c]}{\mathop{{{N}_{2}}}}\,(g)+3Mg\xrightarrow{{}}\underset{[d]}{\mathop{M{{g}_{3}}{{N}_{2}}}}\,\] \[\underset{[d]}{\mathop{M{{g}_{3}}{{N}_{2}}}}\,+6{{H}_{2}}O\xrightarrow{{}}3Mg{{(OH)}_{2}}+\underset{[b]}{\mathop{N{{H}_{3}}}}\,\]
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