1.

Which one of the following is not correct with respect to bond length of the species?A. `C_(2) gt C_(2)^(2-)`B. `B_(2)^(+) gt B_(2)`C. `Li^(2^(+)) gt Li_(2)`D. `O_(2) gt O_(2)^(-)`

Answer» Correct Answer - D
Bond order of `{:(C_(2)=2,C_(2)^(2-)=3,B_(2)^(+)=0.5),(B_(2)=1,Li_(2)^(+)=0.5,Li_(2)=1),(N_(2)^(+)=2.5,N_(2)=3,O_(2)=2.0),(O_(2)^(-)=1.5,,):}`
Bond order is inversely proportional to the bond length . Greater the bond order, shorter is the bond length therefore, `O_(2)^(-) gt O_(2)`


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