2.1.5 Redox Flashcards
1
Q
What is an oxidation number?
A
The number of electrons an atom uses to bond with any other atom
2
Q
What is the oxidation number of an uncombined element such as C, H, O*2?
A
0
3
Q
What is the oxidation number of combined oxygen such as in H*2O?
A
-2
4
Q
What is the oxidation number of oxygen in peroxides?
A
-1
5
Q
What is the oxidation number of combined hydrogen such as in NH3, H2S?
A
+1
6
Q
What is the oxidation number of combined hydrogen in metal hydrides such as LiH?
A
-1
7
Q
What is the oxidation number of a simple ion?
A
Charge on the ion
E.g Na*+ —> +1 ; Cl+- —> -1
8
Q
What is the oxidation number of combined fluorine such as in NaF, CaF*2?
A
-1
