Hydrogen
H #1
Helium
He #2
Lithium
Li #3
Carbon
C #6
Nitrogen
N #7
Oxygen
O #8
Fluorine
F #9
Sodium
Na #11
Magnesium
Mg #12
Aluminum
Al #13
Silicon
Si #14
Phosphorus
P #15
Sulfur
S #16
Chlorine
Cl #17
Potassium
K #19
Calcium
Ca #20
Iron
Fe #26
Nickel
Ni #28
Copper
Cu #29
Bromine
Br #35
Silver
Ag #47
Iodine
I #53
Gold
Au #79
Mercury
Hg #80