IA
1A
1
H
Hydrogen
1.008
3
Li
Lithium
6.941
11
Na
Sodium
22.990
19
K
Potassium
39.098
37
Rb
Rubidium
84.468
55
Cs
Cesium
132.905
87
Fr
Francium
223.020
IIA
2A
4
Be
Beryllium
9.012
12
Mg
magnesium
24.305
20
Ca
Calcium
40.078
38
Sr
Strontium
87.62
56
Ba
Barium
137.327
88
Ra
Radium
226.025
IIIB
3B
21
Sc
Scandium
44.956
39
Y
Yttrium
88.906
57 - 71
Lanthanides
89 - 103
Actinides
Non-Metals
Alkalis
IVB
4B
22
Ti
Titanium
47.88
40
Zr
Zirconium
91.224
72
Hf
Hafnium
178.49
104
Rf
Rutherfordium
[261]
Alkalines
Transitions
VB
5B
23
V
Vanadium
50.942
41
Nb
Niobium
92.906
73
Ta
Tantalum
180.948
105
Db
Dubnium
[262]
Basic-Metals
Semi-Metals
VIB
6B
24
Cr
Chromium
51.996
42
Mo
Molybdenum
95.94
74
W
Tungsten
183.85
106
Sg
Seaborgium
[266]
Halogens
Noble-Gas
VIIB
7B
25
Mn
Manganese
54.938
43
Tc
Technetium
[97.907]
75
Re
Rhenium
186.207
107
Bh
Bohrium
[274]
Lanthanides
Actinides
⇐
26
Fe
Iron
55.938
44
Ru
Ruthenium
101.07
76
Os
Osmium
190.23
108
Hs
Hassium
[269]
atomic number
Symbol
Name
atomic mass
VIIIB
---- 8B ----
27
Co
Cobalt
58.933
45
Rh
Rhodium
102.905
77
Ir
Iridium
192.217
109
Mt
Meitnerium
[276]
⇒
28
Ni
Nickel
58.693
46
Pd
Palladium
106.42
78
Pt
Platinum
195.084
110
Ds
Darmstadium
[281]
IB
1B
29
Cu
Copper
63.546
47
Ag
Silver
107.868
79
Au
Gold
196.966
111
Rg
Roentgenium
[281]
IIB
2B
30
Zn
Zinc
65.380
48
Cd
Cadmium
112.414
80
Hg
Mercury
200.592
112
Cn
Copernicium
[285]
IIIA
3A
5
B
Boron
10.810
13
Al
Aluminum
26.981
31
Ga
Gallium
69.723
49
In
Indium
11.818
81
Tl
Thallium
204.380
113
Nh
Nihonium
[286]
IVA
4A
6
C
Carbon
12.011
14
Si
Silicon
28.085
32
Ge
Germanium
72.630
50
Sn
Tin
118.710
82
Pb
Lead
207.200
114
Fl
Flerovium
[289]
VA
5A
7
N
Nitrogen
14.007
15
P
Phosphorus
30.674
33
As
Arsenic
74.921
51
Sb
Antimony
121.760
83
Bi
Bismuth
208.980
115
Mc
Moscovium
[288]
VIA
6A
8
O
Oxygen
15.999
16
S
Sulfur
32.060
34
Se
Selenium
78.971
52
Te
Tellurium
127.60
84
Po
Polonium
[209]
116
Lv
Livermorium
[293]
VIIA
7A
9
F
Fluorine
18.998
17
Cl
Chlorine
35.450
35
Br
Bromine
79.904
53
I
Iodine
126.904
85
At
Astatine
[210]
117
Ts
Tennessine
[294]
VIIIA
8A
2
He
Helium
4.003
10
Ne
Neon
20.180
18
Ar
Argon
39.948
36
Kr
Krypton
83.798
54
Xe
Xenon
131.293
86
Rn
Radon
[222]
118
Og
Oganesson
[294]
57
La
Lanthanum
138.906
89
Ac
Actinium
227.028
58
Ce
Cerium
140.115
90
Th
Thorium
232.038
59
Pe
Praseodymium
140.908
91
Pa
Protactinium
231.036
60
Nd
Neodymium
144.24
92
U
Uranium
238.029
61
Pm
Promethium
144.913
93
Np
Neptunium
237.048
62
Sm
Samarium
150.36
94
Pu
Plutonium
244.064
63
Eu
Europium
151.966
95
Am
Americium
243.061
64
Gd
Gadolinium
157.25
96
Cm
Curium
247.070
65
Td
Terbium
158.825
97
Bk
Berkelium
247.070
66
Dy
Dysprosium
162.50
98
Cf
Californium
251.080
67
Ho
Holmium
164.930
99
Es
Einsteinium
[254]
68
Er
Erbium
167.26
100
Fm
Fermium
257.095
69
Tm
Thulium
168.934
101
Md
Mendelevium
258.1
70
Yb
Ytterbium
173.04
102
No
Nobelium
259.101
71
Lu
Lutetium
174.967
103
Lr
lawrencium
[262]