Q.

Of the species NO,NO+,NO2+ and NO-, the one with minimum bond strength is

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a

NO+

b

NO

c

NO2+

d

NO-

answer is D.

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Detailed Solution

BO=Nb−Na2Energy order of MO sσ1sσ1s∗σ2sσ2s∗π2px=π2pyσ2pzπ2px∗=π2py∗ We know, Bond length ∝1BO (Bond order) ∝1 Bond strength So, the order of bond strength : NO+>NO=NO2+>NO−So, NO- has minimum bond strength.
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