Oxidation numbers
Calculate the oxidation number of the specified element in the species on the left.
AlCl3 Al
Cr2O7-2 Cr
O3 O
CO3-2 C
AlPO4 P
H2SO4 S
KNO3 N
Sodium metal (Na) Na
K2CrO4 Cr
CCl4 C
HPO4-2 P
H2SO3 S
N2 N

 

Solutions
Balance for charge by adding electrons tot he most positive side. Balance for hydrogen by adding Hydrogen ions to the hydrogen deficient side. Balance for oxygen by adding water to the oxygen deficient side. Balance for Ag atoms Balance for oxygen by adding water to the oxygen deficient side. Balance for hydrogen by adding Hydrogen ions to the hydrogen deficient side. Balance for charge by adding electrons tot he most positive side. Home