Question

Which of these orbitals are antibonding molecular orbitals?

Answer 1

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Antibonding orbitals place less electron density between the nuclei. The nuclear repulsions are greater, so the energy of the molecule increases. Antibonding orbitals are at higher energy levels than bonding orbitals. Antibonding sigma orbitals have higher energy levels and less electron density between the nuclei.

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Answer 2

Antibonding molecular orbitals are the molecular orbital which gives the energy to the molecules. These orbitals have more than one nodes.

Antibonding orbitals state place between nuclei. Antibonding orbitals have more energy than orbitals. In antibonding orbitals, the nuclear energy is more so molecular energy can increased. It has more energy level than electron density.