File:Chapter-4 BOND ORDER OF DIATOMIC SPECIES WITHOUT MOLECULAR ORBITAL THEORY (MOT) pp 44-54.pdf

In the previous chapters 1 & 2, formulae-based mnemonics have been discussed to predict the power of the hybridization state of simple molecules or ions, carbon atoms in organic compounds and heteroatom in the heterocyclic compounds. Limitations of conventional formula have been focused in chapter 3 in the light of innovative formulae. In this chapter-4, bond order of diatomic species having the total number of electrons (1-20), has been predicted without drawing a molecular orbital diagram or without using molecular orbital theory. Here, I have tried to hub four (04) time economic innovative mnemonics by including four (04) formulae to predict the bond order of diatomic species. Here, I have also discussed the application of bond order in chemical bonding and different problems associated with it. This chapter explores the results and gives implications for context-based teaching, learning, and assessment. Bond-order usually predicted from the Molecular Orbital Theory. Molecular Orbital Theory (M.O.T.) was first proposed by Friedrich Hund and Robert Mulliken in 19331, 2. They developed an approach to the covalent bond formation which is based upon the effects of the various electron fields upon each other and which employs molecular orbital rather than atomic orbital. Each such orbital characterizing the molecule as a whole is described by a definite combination of quantum numbers and possesses relative energy value.