1
Q
Bromine
A
Br2
2
Q
Hydrogen
A
H+
3
Q
Barium
A
Ba^2+
4
Q
Aluminium
A
Al^3+
5
Q
Iron(III)
A
Fe^3+
6
Q
Lead
A
Pb^2+
7
Q
Iron(II)
A
Fe^2+
8
Q
Zinc
A
Zn^2+
9
Q
Copper(II)
A
Cu^2+
10
Q
Calcium
A
Ca^2+
11
Q
Iodine
A
I2
12
Q
Magnesium
A
Mg^2+
13
Q
Ammonium
A
NH4+
14
Q
Silver
A
Ag+
15
Q
Lithium
A
Li+
16
Q
Potassium
A
K+
17
Q
Sodium
A
Na+
18
Q
Oxygen
A
O2
19
Q
Hydroxide
A
OH-
20
Q
Chlorine
A
Cl2
21
Q
Nitrogen
A
N2
22
Q
Hydrogen
A
H2
23
Q
Methane
A
CH4
24
Q
Ammonia
A
NH3
25
Sulphuric Acid
H2SO4
26
Sulfate
SO4^2-
27
Sulfide
S^2-
28
Nitrate
NO3-
29
Hydride
H-
30
Carbonate
CO3^2-
31
Hydrogen Carbonate
HCO3-
32
Oxide
O^2-
33
Hydrochloric Acid
HCl
34
Iodide
I-
35
Bromide
Br-
36
Chloride
Cl-
37
Nitric Acid
HNO3
38
Fluoride
F-
39
Nitride
N^3-
Y9 Chemistry
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