Reacts with water to form propyne gas

CHEMISTRY · Single correct

Problem

\mathrm{Mg}_2\mathrm{C}_3

reacts with water to form propyne gas. The

\mathrm{C}_3^{4-}

ion has: (1) Two sigma and two pi bonds (2) Three sigma and one pi bond (3) Two sigma and one pi bond (4) Two sigma and three pi bonds