Oxidation Flashcards
1
Q
What is the oxidation number for Monatomic Ions?
A
Equal to the charge of the Ion
ex: Na+, Cl-, O2-
2
Q
What is the oxidation number for Elements?
A
zero.
ex: Cu, Cl2, O2
3
Q
What is the charge of Hydrogen when paired with non-metals?
A
H1+
ex: H2O, HCl, CH4
4
Q
What is the charge of Hydrogen when paired with metals?
A
H1-
ex: CaH2, LiAlH4, SiH4
5
Q
What is the oxidation number of polyatomic ions?
A
Equal to the sum of the overall charge
6
Q
The charge of oxygen is generally 2- with the exception of what?
A
Peroxides.
ex: H2O2, Na2O2, BaO2
7
Q
Identify the oxidation numbers of P
HPO3
H3PO4
H3PO3
H5P3O10
A
+5
+5
+3
+5
8
Q
What is the oxidation of Chromium in CrO3?
A
+6
9
Q
What is the oxidation state of sulfur in SO3^2-?
A
+4
