Question

1. Using molecular orbital theory, write electronic configuration, and determine bond order and magnetic nature of O2- ion.
2. Using VSEPR, predict hybridization and shape of the following:
i. CH4 SF4XEF4
ii. Pcl5 SF6BrF5

Answer 1

Answer:

1.O2+ is more stable than O2-. Reason: According to molecular orbital theory O2+has 15 electrons &it has one electron in antibonding orbital. In the case of O2- 17 electrons are present &3 electrons are present in antibonding orbitals. If number of electrons more in antibonding orbital the molecule become unstable.

2.Trional bipyramidal

For sp3d hybridized central atoms the only possible molecular geometry is trigonal bipyramidal. If all the bonds are in place the shape is also trigonal bipyramidal.

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