1
H
Hydrogen
2
He
Helium
3
Li
Lithium
4
Be
Beryllium
5
B
Boron
6
C
Carbon
7
N
Nitrogen
8
O
Oxygen
9
F
Fluorine
10
Ne
Neon
11
*Na
Sodium
12
Mg
Magnesium
13
Al
Aluminum
14
Si
Silicon
15
P
Phosphorus
16
S
Sulfur
17
Cl
Chlorine
18
Ar
Argon
19
*K
Potassium
20
Ca
Calcium
21
Sc
Scandium
Ti
Titanium
23
V
Vanadium
24
Cr
Chromium