Find the oxidation number of the elements in the following compounds.
a. ${C in CO}_{2}$
b. ${Mn in MnSO}_{4}$
c. ${N in HNO}_{3}$

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Solution

a. ${C in CO}_{2}$
1(C) + 2(0) = 0
1x + 2(-2) = 0
x-4 = 0 ‘
x = +4 .
ON of ${C in CO}_{2}$ is +4

b. ${Mn in MnSO}_{4}$
1 (Mn) + 1 (S) + 4(0) = 0
x + 1(+6) + 4(-2) = 0
x + 6 – 8 = 0
x – 2 = 0
x = +2
ON of ${Mn in MnSO}_{4}$ is +2

c. ${N in HNO}_{3}$
1(H) + 1 (N) +3(0) =0
1 (+1) + 1 (x) + 3 (-2) =0
+ 1 + x – 6 =0
x – 5 =0
x = +5
ON of ${N in HNO}_{3}$ is +5

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Find the oxidation number of the elements in the following compounds. a. C in CO2 b. Mn in MnSO4 c. N in HNO3

Find the oxidation number of the elements in the following compounds.
a. ${C in CO}_{2}$
b. ${Mn in MnSO}_{4}$
c. ${N in HNO}_{3}$