Valence-bond theory is one of the two quantum mechanical approaches that explains bonding in molecules In some cases, valence bond theroy cannot cannot satisfactorily account for observed properties of molecules Bond order and magnetic behaviour shown by different species have been matched Which is the incorrect matching .A. `{:("Species",,"Bond order",,"Magentic behaviour"),(CN^(Θ)(14),,3.0,,"dimagnetic"):}`B. `{:("Species",,"Bond order",,"Magentic behaviour"),(BN(14),,2.0,,"dimagnetic"):}`C. `{:("Species",,"Bond order",,"Magentic behaviour"),(C_(2)(12),,2.0,,"dimagnetic"):}`D. `{:("Species",,"Bond order",,"Magentic behaviour"),(B_(2)(10),,3.0,,"paramagnetic"):}`

Valence-bond theory is one of the two quantum mechanical approaches th

1.	Valence-bond theory is one of the two quantum mechanical approaches that explains bonding in molecules In some cases, valence bond theroy cannot cannot satisfactorily account for observed properties of molecules Bond order and magnetic behaviour shown by different species have been matched Which is the incorrect matching .A. `{:("Species",,"Bond order",,"Magentic behaviour"),(CN^(Θ)(14),,3.0,,"dimagnetic"):}`B. `{:("Species",,"Bond order",,"Magentic behaviour"),(BN(14),,2.0,,"dimagnetic"):}`C. `{:("Species",,"Bond order",,"Magentic behaviour"),(C_(2)(12),,2.0,,"dimagnetic"):}`D. `{:("Species",,"Bond order",,"Magentic behaviour"),(B_(2)(10),,3.0,,"paramagnetic"):}`
Answer» Correct Answer - D Bond order of `B_(2)` is one

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