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What is bond order? How is it related to...

What is bond order? How is it related to bond length and bond dissociation energy?

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(i) Bond order = `1/2[N_(b)-N_(a)]`
n Where `N_b` = Number of electrons in bonding molecular orbitals.
`N_a`= Number of electrons in ant-bonding molecular orbitals.
Border order `prop 1/("bond length")`
Bond order `prop` Bond dissociation energy.
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