The two resonance structures of and bonding in this compound has to be given using MO theory and also has to describe how the MO theory rationalize the bond order of for 2bonds in .
Molecular orbital (MO) theory: It is a method for determining molecular structure in which electrons are not assigned to individual bonds between atoms, but are treated as moving under the influence of the nuclei in the whole molecule.
The bond order has defined as the net number of bonding electrons pairs linking a pair of atoms. This same concept can be applied directly to molecular orbital theory, but not bond order is defined as.
Bond length of a molecule decreases with increase in bond order.
Sometimes the chemical bonding of a molecule cannot be represented using a single Lewis structure. In these cases, the chemical bonding are described by delocalization of electrons and is known as resonance.
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