Question

The highest energy occupied molecular orbital in the C-C bond of the C2 molecule is?

Answer 1

The highest energy occupied molecular orbital in the C-C bond of the C₂ molecule is 2pπ orbitals.

What is Molecular Orbital Theory?

According to this theory,

• Molecular orbitals are formed by intermixing of atomic orbitals of two or more atoms having comparable energies
• The number of molecular orbitals formed is equal to the number of atomic orbitals combined.
• The shape of molecular orbitals formed depends on the type of atomic orbitals combined
• Only atomic orbitals having comparable energies and the same orientation can intermix
• Bonding M.O. is formed by the additive effect of atomic orbitals and thus, has lower energy and high stability.
• Antibonding M.O. is formed by the subtractive effect of atomic orbitals and thus, has higher energy and low stability.
• Bonding M.O. is represented by $\sigma, \pi, \delta$ while Antibonding M.O. is represented by $\sigma^*, \pi^*, \delta^*$

Molecular Orbital Diagram of C₂

Learn more about Molecular Orbital Theory:

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