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Question

The common features of the species N2−2,O2 and NO− are:

A
bond order is three and are isoelectronic
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B
bond order is two and are isoelectronic
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C
bond order is three but are not isoelectronic
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D
bond order is two but are not isoelectronic
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Solution

The correct option is B bond order is two and are isoelectronic
N22=1062=2
O2=842=2
NO=1062=2
Note:All the above molecules have bond order 2
No.of electrons in a) N22 = {7x2}+2=16 electrons
b) O2 = (8x2)=16 electrons
c) NO = 7+8+1=16 electrons
Hence all the three molecules are iso electronic too


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