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JEEMAIN and NEET
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JEEMAIN PAST PAPERS
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2005
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Q)
The structure of diborane
(
B
2
H
6
)
contains :
( A ) four
2
C
−
2
e
−
bonds and two
3
C
−
2
e
−
bonds
( B ) two
2
C
−
2
e
−
bonds and four
3
C
−
2
e
−
bonds
( C ) two
2
C
−
2
e
−
bonds and two
3
C
−
2
e
−
bonds
( D ) four
2
C
−
2
e
−
bonds and four
3
C
−
2
e
−
bonds
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