2.1.5 Flashcards
(5 cards)
1
Q
What is an oxidation number
A
The number of electrons an atom uses to bond with another atom
2
Q
What is the oxidation number of an uncombined element
A
0
3
Q
What is the oxidation number of oxygen
A
-2, unless it’s in a peroxide where it is -1
4
Q
What is the oxidation number of hydrogen
A
+1, unless it’s in a metal hydride where it is -1
5
Q
What is the oxidation number of an ion
A
Its charge
