What is the oxidation number of Phosphorous in PCl3?

2.
What is the oxidation number of Phosphorous in H4P2O7?

:
What is the oxidation number of Phosphorous in H4P2O7?

3.
What is the oxidation number of Phosphorous in H4P2O6?

:
What is the oxidation number of Phosphorous in H4P2O6?

Column B
a.The oxidation number is +5.
b.The oxidation number is +4.
c.The oxidation number is +2.
d.The oxidation number is +1.
e.The oxidation number is +3.

1. The oxidation number of phosphorous in PCl3 is +3.

2. The oxidation number of phosphorous in H4P2O7 is +5.
3. The oxidation number of phosphorous in H4P2O6 is +4.