Why there cannot be four bonding between two carbon atoms?
Dear Student,
There cannot be four bonding, i.e. a quadruple bond cannot be formed between two C atoms, because the C2 molecule formed is considered unstable.
There is no explaination as to why this bond cannot be formed according to the Lewis Theory as the octet will be completed in this case.
However, valence bond model says that C2 cannot exist because C doesnot have enough atomic orbitals pointing in the right direction for bond formation.
Molecular orbital theory supports the formation C2 which exist in vapour phase only.
There cannot be four bonding, i.e. a quadruple bond cannot be formed between two C atoms, because the C2 molecule formed is considered unstable.
There is no explaination as to why this bond cannot be formed according to the Lewis Theory as the octet will be completed in this case.
However, valence bond model says that C2 cannot exist because C doesnot have enough atomic orbitals pointing in the right direction for bond formation.
Molecular orbital theory supports the formation C2 which exist in vapour phase only.