1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
1
H
Hiđro 1 1.00
He
Heli 2 4.00
2
Li
Lithi, Liti 3 6.94
Be
Berili 4 9.01
B
Bo 5 10.81
C
Cacbon 6 12.01
N
Nitơ 7 14.00
O
Oxy, Oxi 8 15.99
F
Flo 9 18.99
Ne
Neon 10 20.17
3
Na
Natri 11 22.98
Mg
Magiê 12 24.30
Al
Nhôm 13 26.98
Si
Silic 14 28.085
P
Photpho 15 30.97
S
Lưu huỳnh 16 32.06
Cl
Clo 17 35.45
Ar
Agon 18 39.94
4
K
Kali 19 39.09
Ca
Canxi 20 40.07
Sc
Scandi 21 44.95
Ti
Titan 22 47.86
V
Vanađi 23 50.94
Cr
Crom 24 51.99
Mn
Mangan 25 54.93
Fe
Sắt 26 55.84
Co
Coban 27 58.93
Ni
Nikel 28 58.69
Cu
Đồng 29 63.54
Zn
Kẽm 30 65.40
Ga
Gali 31 69.72
Ge
Gecmani 32 72.64
As
Asen 33 74.92
Se
Selen 34 78.96
Br
Brom 35 79.90
Kr
Kripton 36 83.79
5
Rb
Rubiđi 37 85.46
Sr
Stronti 38 87.62
Y
Ytri 39 88.90
Zr
Ziriconi 40 91.22
Nb
Niobi 41 92.90
Mo
Molybden 42 95.94
Tc
Techneti 43 (98)
Ru
Ruteni 44 101.07
Rh
Rođi 45 102.90
Pd
Palađi 46 106.42
Ag
Bạc 47 107.86
Cd
Cadmi 48 112.41
In
Indi 49 114.81
Sn
Thiếc 50 118.71
Sb
Antimon 51 121.76
Te
Teluri 52 127.6
I
Iot, Iod 53 126.90
Xe
Xenon 54 131.29
6
Cs
Caesi 55 132.90
Ba
Bari 56 137.32 		*
Hf
Hafini 72 178.49
Ta
Tantal 73 180.94
W
Wolfram 74 183.84
Re
Rheni 75 186.20
Os
Osimi, Osmi 76 190.23
Ir
Iriđi 77 192.21
Pt
Platin 78 195.08
Au
Vàng 79 196.97
Hg
Thuỷ ngân 80 200.59
Tl
Thali 81 204.38
Pb
Chì 82 207.2
Bi
Bismuth 83 208.98
Po
Poloni 84 (209)
At
Astatin 85 (210)
Rn
Radon 86 (222)
7
Fr
Franxi 87 (223)
Ra
Rađi 88 (226) 		**
Rf
Rutherfordi 104 (265)
Db
Dubni 105 (268)
Sg
Seaborgi 106 (263)
Bh
Bohri 107 (272)
Hs
Hassi 108 (278)
Mt
Meitneri 109 (278)
Ds
Darmstadti 110 (281)
Rg
Roentgeni 111 (280)
Cn
Copernici 112 (285)
Nh
Nihoni 113 (284)
Fl
Flerovi 114 (289)
Mc
Moscovi 115 (288)
Lv
Livermori 116 (293)
Ts
Tennessine 117 (294)
Og
Oganesson 118 (294)
8
Uue
Ununennium 119 (315)
Ubn
Unbinilium 120 (318) 		***
Nguyên tố họ lantan *
La
Lanthan 57 138.90
Ce
Ceri 58 140.11
Pr
Praseodymi 59 140.90
Nd
Neodymi 60 144.24
Pm
Prometi 61 (145)
Sm
Samari 62 150.36
Eu
Europi 63 151.96
Gd
Gadolini 64 157.25
Tb
Terbi 65 158.92
Dy
Dysprosi 66 162.5
Ho
Holmi 67 164.93
Er
Eribi 68 167.25
Tm
Thulium 69 168.93
Yb
Yterbi 70 173.04
Lu
Luteti 71 174.96
Nguyên tố họ actini **
Ac
Actini 89 (227)
Th
Thori 90 232.03
Pa
Protactini 91 231.035
U
Urani 92 238.028
Np
Neptuni 93 (237)
Pu
Plutoni 94 (244)
Am
Amerixi 95 (243)
Cm
Curium 96 (247)
Bk
Berkeli 97 (247)
Cf
Californi 98 (251)
Es
Ensteni 99 (252)
Fm
Fermi 100 (257)
Md
Mendelevi 101 (258)
No
Nobeli 102 (259)
Lr
Lawrenci 103 (262)
Superactinides ***
Ubu
Unbiunium 121 (320)
Ubb
Unbibium 122 (322)