$\begin{array}{1 1}(a)\;\text{The greater the difference in energy between two overlapping atomic orbitals,the more polar is the resulting bond}\\(b)\; \text{The bonding orbitals have more of the character of more electronegative element}\\(c)\;\text{The anti bonding orbitals have more of the character of mole of electropositive element}\\(d)\;\text{The anti bonding orbitals have more of the character of more of electronegative element}\end{array}$