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Standard XII
Chemistry
Allotropes of Phosphorus
Question
Lowest oxidation state of phosphorous is in:
H
3
P
O
2
H
3
P
O
4
H
4
P
2
O
7
H
3
P
O
3
A
H
3
P
O
4
B
H
3
P
O
2
C
H
4
P
2
O
7
D
H
3
P
O
3
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Solution
Verified by Toppr
The correct option is
D
H
3
P
O
3
oxidation state of oxygen ;-
−
2
oxidation state of hydrogen ;-
1
H
3
P
O
2
:-
1
∗
3
+
x
+
(
−
2
)
∗
2
=
0
x
=
1
H
3
P
O
4
:-
1
∗
3
+
x
+
(
−
2
)
∗
4
=
0
x
=
5
H
4
P
2
O
7
:-
1
∗
4
+
2
x
+
(
−
2
)
∗
7
=
0
x
=
5
H
3
P
O
3
:-
1
∗
3
+
x
+
(
−
2
)
∗
3
=
0
x
=
3
As we can see from the result:-
H
3
P
O
3
has the lowest oxidation state.
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Similar Questions
Q1
Given are
H
3
P
O
2
,
H
3
P
O
3
,
H
3
P
O
4
and
H
4
P
2
O
7
Which of the above oxoacids results into two series of salts?
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Q2
The sum of basicities of
H
3
P
O
4
,
H
3
P
O
2
and
H
3
P
O
3
is:
View Solution
Q3
Sum of basicity of
H
3
P
O
4
,
H
3
P
O
3
,
H
3
P
O
2
is equal to:
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Q4
The total number of diprotic acids among the following is:
H
3
P
O
4
,
H
2
S
O
4
,
H
3
P
O
3
,
H
2
C
O
3
,
H
2
S
2
O
7
,
H
3
B
O
3
,
H
3
P
O
2
,
H
2
C
r
O
4
,
H
2
S
O
3
View Solution
Q5
What are the basicities of
H
3
P
O
4
and
H
3
P
O
3
respectively?
View Solution