Oxidation state Flashcards
1
Q
The oxidation number of an uncombined element is
A
0
2
Q
For ions containing single atoms (monoatomic), the oxidation number is the same as the what?
A
charge on the ion, e.g. for Na+ and Cl‑ the oxidation numbers would be +1 and -1 respectively.
3
Q
oxygen has oxidation number
A
-2
4
Q
hydrogen has the oxidation number
A
+1
5
Q
hydrides has the oxidation number
A
-1
6
Q
The sum of all the oxidation numbers of all the atoms in a molecule or neutral compound must add up to
A
0
7
Q
The sum of all the oxidation numbers of all the atoms in a polyatomic ion must add up to
A
the charge on the ion
