Question

Select correct statement(s).

• A. Cyanamide ion $(CN_2^{2-})$ $is electronic with$ CO_2$, and has the same linear structure
• B. $Mg_2C_3$ reacts with water to form propyne
• C. $CaC_2$ has $NaCl$ type lattice
• D. All of the above

Answer 1

Answer: (D)

All of the above

Answer 2

Thus, $CN _{2}^{2-}$ and $CO _{2}$ both are isoelectronic and isostructural. (b) $Mg _{2} C _{3}+ H _{2} O \longrightarrow \underset{\text{propyne}}{CH _{3}- C \equiv CH} + Mg ( OH )_{2}$ (c) $Ca ^{2+} C _{2}^{2-}$ has $NaCl$ type latice.