Formation of a bridge bond is best explained by molecular orbital theory. According to which a bridge bond is formed by filling electrons into molecular orbital which spread over three nuclei hence such bonds are specified as three centered bond.
In which of the following dimer empty atomic orbital of central atom of monomer does not involve in hybridization:
a. Ga2H6
b. Al2Br6
c. Be2H4
d. Cl2O6