redox Flashcards
1
Q
oxidation
A
increase in oxidation number
2
Q
reduction
A
decrease in oxidation number
3
Q
uncombined elements
A
0
4
Q
ions
A
same as charge on ion
(e.g cl- = -1)
5
Q
group 1
A
+1
6
Q
group 2
A
+2
7
Q
aluminium
A
+3
8
Q
hydrogen
A
+1 (excepts in hydrides where its -1)
hydride = metal bonded to H (e.g NaH)
9
Q
chlorine
A
-1
10
Q
flourine
A
-1
11
Q
oxygen
A
-2 (except in perioxides = -1 and +2 in OF2)
12
Q
A
