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  4. The carbon atoms in calcium carbide are held by

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Q. The carbon atoms in calcium carbide are held by

KEAMKEAM 2019Chemical Bonding and Molecular Structure

Solution:

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 $2,200^{\circ} C .$