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Question
Chemistry
The oxidation states of P in the following compounds H3PO3, PCl3, Ca3P2, Na3PO4, POF3 are respectively be
Q. The oxidation states of P in the following compounds
H
3
PO
3,
PCl
3,
Ca
3
P
2,
Na
3
PO
4,
POF
3
are respectively be
1998
200
NTA Abhyas
NTA Abhyas 2020
The p-Block Elements - Part2
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A
+ 3, + 3, - 3, + 5, + 5
100%
B
+ 5, + 5, - 3, + 3, + 3
0%
C
+ 4, + 3, - 3, + 4, + 5
0%
D
+ 3, + 3, - 2, + 4, + 5
0%
Solution:
Let the oxidation state of phosphorus be x.
(i) H
3
PO
3
(3
×
+ 1) + x + (3
×
- 2) = 0
x = + 3
(ii) PCl
3
x + (3
×
- 1)
x = + 3
(iii) Ca
3
P
2
(3
×
+ 2) + 2x
x = - 3
(iv) Na
3
PO
4
(3
×
1) + x + (4
×
- 2)
x = + 5
(v) POF
3
x + (- 2) + (3
×
- 1)
x = + 5