The number and type of bonds between two carbon atoms in CaC2 are (a) one sigma and one πbond (b

step 1 The number and type of bonds, the number and types of bond, the number of and type of bonds, the

The number and type of bonds between two carbon atoms in...

The number and type of bonds between two carbon atoms in $\mathrm{CaC}_{2}$ are
(a) one sigma and one $\pi$ bond
(b) one sigma and two $\pi$ bonds
(c) one sigma and one and a half $\pi$ bonds
(d) one sigma bond

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Key Concepts

Pi Bond

A pi bond is a type of covalent bond formed by the lateral overlap of parallel atomic orbitals. Pi bonds supplement sigma bonds in multiple bond scenarios, contributing additional bond strength and rigidity due to restricted rotation around the bond axis.

Sigma Bond

A sigma bond is the strongest form of covalent bond formed by the head-on overlap of atomic orbitals. It provides the primary framework for the bonding interaction between two atoms, allowing for free rotation about the bond axis in many cases.

Triple Bond

A triple bond is characterized by a bond order of three between two atoms and typically consists of one sigma bond and two pi bonds. This configuration results in a strong and short bond, as seen in species where high bond strength is necessary.

Bond Order

Bond order is a concept that indicates the number of chemical bonds between a pair of atoms. It is directly related to bond strength and stability, with higher bond orders reflecting stronger and usually shorter bonds between atoms.

Acetylide Ion

The acetylide ion is a chemical species containing two carbon atoms typically bonded by a triple bond, which comprises one sigma and two pi bonds. It illustrates key aspects of multiple bonding in carbon compounds and is central to understanding the bonding in derivatives like calcium carbide.

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