Deduce the oxidation number of the following atoms and complete the table

CHEMISTRY · Subjective · A Level · Chemistry · Oxidation, reduction and redox reactions · Oxidation, reduction and redox reactions

Problem

Deduce the oxidation number of the following atoms and complete the table. The first row has been completed for you.
SubstanceOxidation states
KBrK: +1Br: -1
PCl 5P:Cl:
Fe 2 O 3Fe:O:
NaNO 2Na:N:O:
K2CrO4\text{K}_2\text{CrO}_4K:Cr:O:
H2\text{H}_2H:
SO42−\text{SO}_4^{2-}S:O:
HCO3−\text{HCO}_3^-H:C:O:
NO3−\text{NO}_3^-N:O:

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