What is the oxidation number for P in PO3?

Answer 1

It is customary to assign oxygen an oxidation number of -2, except in peroxides and superoxides. Using this convention, phosphorus must have an oxidation number of +3 to balance the charges in P4O6. (6 X 2 = 4 X 3)

Answer 2

+5 for P

Answer 3

In the elemental form zero. In phosphides containing the P3- ion -3. In P4O6 , PCl3, +3, in P4O10 and PCl5 +5.

Phosphorous is in group 15 and has 5 valence electrons it can "gain" 3 or "lose" 5.

OIL RIG oxidation is loss, reduction is gain. So the expected oxidation numbers are -3, +3, +5.

Answer 4

PO3 does not exist assuming PO33- is meant he answer is 3.

O has 2- oxidation number, an extra electron is counted a s 1, the oxidation number of the whole ion must be zero; therefore P oxidation number = 3

Answer 5

Since it is in its pure elemental form the oxidation number is zero.

Answer 6

The question should be PO43- ion as there is no neutral molecule by the formula, PO4. The oxidation numbers are -2 for each O, +5 for P

Answer 7

This is a weak acid. P shows +1 in this acid.

Answer 8

Oxidation no. Of P in P4 =0

Answer 9

5

Answer 10

4.0