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The electronic bond structure

Answer Text:
Electronic bond structure
-This is the series of “allowed” and “forbidden” energy bands that it contains according to the band theory which postulates the
existence of continuous ranges of energy values (bands) which electron may occupy “allowed” or not occupy ‘forbidden”.
-According to molecular orbital theory, if several atoms are brought together in a molecule, their atomic orbitals split, producing a number of molecular orbitals proportional to the number of atoms. However when a large number of atoms are brought together the
difference between their energy levels become very small, such that some intervals of energy contain no orbitals and this theory makes an assumption that these energy levels are as numerous as to be indistinct.