Question

Alkaline earth metal (A), belongs to 3^rd period reacts with oxygen and nitrogen to form compound (B) and (C) respectively. It undergoes metal displacement reaction with AgNO₃ solution to form compound (D). Identify A, B, C and D.

Answer 1

Alkaline earth metal, 3^rd → Magnesium (Mg) ……….(A)

\[\ce{2Mg + O2 -> 2MgO}\] …………(B)

\[\ce{3Mg + N2 -> Mg3N2}\] ..........(C)

\[\ce{Mg + 2AgNO3 -> 2Ag + Mg(NO3)2}\] ………….(D)

• A – Magnesium
• B – Magnesium oxide
• C – Magnesium nitride
• D – Magnesium