Oxidation Numbers: Worksheet A

NO₃^-

N + (3 x -2) = -1
N = +5

(Note: The oxidation number of                 non-metals other than oxygen varies)

ii.

N₂O

iii.

NO₂^-

iv.

N₂O₄

v.

PO₄^3-

vi.

P₂O₅

vii.

Cr₂O₃

(Note: The oxidation number of the transition metals varies)

viii.

Cr₂O₇^2-

ix.

PbO

(Note: The oxidation number of the the soft metals varies)

x.

PbO₂

xi.

NaH

(Note: In special cases the oxidation number of hydrogen and oxygen vary)

xii.

OF₂