Abstract The hybrid orbitals of tetrahedral oxy‐ions containing some d character have been calculated by maximum overlap method. The d characters of hybrid orbitals increase in the order of SiO , PO , SO , ClO , and decrease in order of GeO , AsO , SeO , BrO . The bond strengths are also obtained for these ions. The hybrid Orbital of VO , CrO , and MnO are of the type d 3 s as the result of calculation.