Question

The oxidation number of P in Mg₂P₂0₇ is ____________. 

Options

• +3

• +2

• +5

• −3

Answer 1

The oxidation number of P in Mg₂P₂0₇ is +5.

Explanation:

+2 x −2

Mg₂P₂O₇

2(+2) + 2x + 7(−2) = 0

+4 +2x − 14 = 0

+2x = +10

x =+5