What does a .5 or 1.5 ..Bond order mean?

Asked by  | 26th Mar, 2012, 11:46: AM

Expert Answer:

Bond order is the number of bonding pairs of electrons between two atoms. In a covalent bond between two atoms, a single bond has a bond order of one, a double bond has a bond order of two, a triple bond has a bond order of three, and so on. 

Following formula is used to find the bond order of a molecule:

(bonding electrons) - (anti-bonding electrons)

A fractional bond order is found in molecules and ions that have resonance structures. In the example of ozone, the bond order would be the average of a double bond and a single bond or 1.5

Answered by  | 26th Mar, 2012, 06:03: PM

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