Question

The carbon atoms in calcium carbide are held by

• A. Ionic bonds
• B. Two sigma bonds
• C. Teo sigma and one coordinate bond
• D. One sigma and two $\pi$ bonds

Answer 1

Answer: (D)

One sigma and two $\pi$ bonds

Answer 2

The carbon atoms in calcium carbide are held together by one sigma and two $\pi$ -bonds.

The structural representation of $\,CaC _{2}$ is $[: C \equiv C :]^{2-} Ca ^{2+}$

This can be produced industrially from a mixture of lime and coke in an electric are furnace at $2,200^{\circ} C .$