AX is a covalent diatomic molecule where A and X are second row elements of periodic table. Based on — Chemical Bonding Chemistry Question

Question

AX is a covalent diatomic molecule where A and X are second row elements of periodic table. Based on Molecular orbital theory, the bond order of AX is 2.5. The total number of electrons in AX is ...................... . (Round off to the Nearest Integer).