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JEEMAIN and NEET
>>
JEEMAIN PAST PAPERS
>>
2002
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Q)
Increasing order of bond strength of
O
2
,
O
−
2
,
O
2
−
2
and
O
+
2
is :
( A )
O
2
<
O
+
2
<
O
−
2
<
O
2
−
2
( B )
O
+
2
<
O
2
<
O
−
2
<
O
2
−
2
( C )
O
2
−
2
<
O
−
2
<
O
2
<
O
+
2
( D )
O
−
2
<
O
2
−
2
<
O
+
2
<
O
2
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