Bond order in O2+ is ‘X’. Bond order in O2- is ‘Y’. Difference between X and Y is

# Bond order in ${\mathrm{O}}_{2}^{+}$ is ‘X’. Bond order in ${\mathrm{O}}_{2}^{-}$ is ‘Y’. Difference between X and Y is

1. A

1

2. B

0.5

3. C

Zero

4. D

1.5

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### Solution:

${\mathrm{O}}_{2}^{-2}-{\mathrm{KK}}^{\text{'}}{\left({\mathrm{\sigma }}_{2\mathrm{s}}\right)}^{2}{\left({\mathrm{\sigma }}_{2\mathrm{s}}^{*}\right)}^{2}{\left({{\mathrm{\sigma }}_{2\mathrm{p}}}_{\mathrm{z}}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{x}}}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{y}}}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{x}}}^{*}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{y}}}^{*}\right)}^{2}$

${\mathrm{O}}_{2}^{+}-{\mathrm{KK}}^{\text{'}}{\left({\mathrm{\sigma }}_{2\mathrm{s}}\right)}^{2}{\left({\mathrm{\sigma }}_{2\mathrm{s}}^{*}\right)}^{2}{\left({\mathrm{\sigma }}_{2{\mathrm{p}}_{\mathrm{z}}}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{x}}}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{y}}}\right)}^{2}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{x}}}^{*}\right)}^{1}{\left({\mathrm{\pi }}_{2{\mathrm{p}}_{\mathrm{y}}}^{*}\right)}^{0}$

Bond order and magnetic moment :

$—$ O bond length in

${\mathrm{O}}_{2}^{-2}>{\mathrm{O}}_{2}^{-}>{\mathrm{O}}_{2}>{\mathrm{O}}_{2}^{+}$

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