1
H
hydrogen
2
He
helium
3
Li
lithium
4
C
carbon
5
O
oxygen
6
F
fluorine
7
Na
sodium
8
Mg
magnesium
9
P
phosphorus
10
S
sulfur
11
Cl
chlorine
12
K
potassium
13
Ti
titanium
14
Cr
chromium
15
Fe
iron
16
Cu
copper
17
Br
bromine
18
Ag
silver
19
I
iodine
20
Ba
barium
21
N
nitrogen
22
Ca
calcium
23
Zn
zinc
24
Pb
lead
25
Al
aluminum
26
Be
beryllium
27
Ni
nickel
28
Sn
tin