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
22
Ti - Titanium
23
V - Vanadium
24
Cr - Chromium
25
Mn - Manganese