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Standard XII
Chemistry
Allotropes of Phosphorus
Question
In pyrophosphoric acid,
H
4
P
2
O
7
, number of
σ
−
and
d
π
−
p
π
bonds respectively are
8
and
2
12
and zero
6
and
2
12
and
2
A
6
and
2
B
12
and zero
C
12
and
2
D
8
and
2
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Solution
Verified by Toppr
O
=
O
−
H
|
P
|
O
−
H
−
O
−
O
−
H
|
P
|
O
−
H
=
O
The two double bonds contributes 2
σ
and 2
d
π
−
p
π
.
There are 4 O-H groups = 4
σ
bonds
There are 6 P-O type of bonds.
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