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The number of types of bonds between two carbon atoms in calcium carbide is

1. One sigma, one pi
2. Two sigma, one pi
3. Two sigma, two pi
4. One sigma, two pi

Correct answer: One sigma, two pi

Solution

In calcium carbide, the carbon atoms are connected by a triple bond, which consists of one sigma bond and two pi bonds. The sigma bond is formed by the head-on overlap of orbitals, while the two pi bonds result from the side-to-side overlap of p orbitals.

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