Gujarati
4.Chemical Bonding and Molecular Structure
medium

The bond length the species ${O_2},O_2^ + $ and $O_2^ - $ are in the order of

A

$O_2^ - > {O_2} > O_2^ + $

B

$O_2^ + > O_2^ - > {O_2}$

C

${O_2} > O_2^ + > O_2^ - $

D

 $O_2^ + > {O_2} > O_2^ - $

Solution

(a) As bond order increase bond length decrease the bond order of species are

$ = \frac{{{\rm{number \,of\, bonding \,electron – Number \,of \,}}a{\rm{.}}b{\rm{. electron}}}}{2}$

For ${O_2} = \frac{{10 – 6}}{2} = 2$ ;

$O_2^ + = \frac{{10 – 5}}{2} = 2.5$

$O_2^ – = \frac{{10 – 7}}{2} = 1.5$

So, bond order $O_2^ + > {O_2} > O_2^ – $

 

Standard 11
Chemistry

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