(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
(26) Fe
Iron
(27) Co
Cobalt
(28) Ni
Nickel
(29) Cu
Copper
(30) Zn
Zinc
(31) Ga
Gallium
(32) Ge
Germanium
(33) As
Arsenic
(34) Se
Selenium
(35) Br
Bromine
(36) Kr
Krypton
(37) Rb
Rubidium
(38) Sr
Strontium
(40) Zr
Zirconium
(47) Ag
Silver
(50) Sn
Tin
(51) Sb
Antimony
(52) Te
Tellurium
(53) I
Iodine
(54) Xe
Xenon
(55) Cs
Caesium
(56) Ba
Barium
(79) Au
Gold
(80) Hg
Mercury
(82) Pb
Lead
(87) Fr
Francium
(92) U
Uranium
(39) Y
Yttrium