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In the following the correct bond order ...

In the following the correct bond order sequence is:

A

`O_2gtO_2^(-)gtO_2^(2-)gtO_2^(+)`

B

`O_2^(2-)gtO_2^(+)gtO_2^(-)gtO_2`

C

`O_2^(+)gtO_2gtO_2^(-)gtO_2^(2-)`

D

`O_2^(+)gtO_2^(-)gtO_2^(2-)gtO_2`

Text Solution

Verified by Experts

The correct Answer is:
C
Electronic configuration and bond order of the given species
`O_2:sigma_(1s)^(2)sigma_(1s)^(**2)sigma_(2s)^(2)sigma_(2s)^(**2)sigma_(2p_z)^(2)pi_(2p_x)^2=pi_(2p_y)^2pi_(2px)^(**1)=pi_(2p_y)^(**)`
B.O. = 2
`O_2^(+) : sigma_(1s)^(2)sigma_(1s)^(**2)sigma_(2s)^(2)sigma_(2s)^(**2)sigma_(2p_z)^(2)pi_(2p_x)^2=pi_(2p_y)^2pi_(2px)^(**1)
B.O. = 2.5
`O_2^(-) : sigma_(1s)^(2)sigma_(1s)^(**2)sigma_(2s)^(2)sigma_(2s)^(**2)sigma_(2p_z)^(2)pi_(2p_x)^2=pi_(2p_y)^2pi_(2px)^(**1)=pi_(2p_y)^(**1)`
B.O. =1.5
`O_(2)^(2-) : sigma_(1s)^(2)sigma_(1s)^(**2)sigma_(2s)^(2)sigma_(2s)^(**2)sigma_(2p_z)^(2)pi_(2p_x)^2=pi_(2p_y)^2pi_(2px)^(**1)=pi_(2p_y)^(**2)`
B.O. =1.0
`therefore` Correct bond order sequence is
`O_(2)^(+)gtO_2gtO_2^(-2)gtO_2^(2-)`
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