to He
↪
to Ne
↪
to Ar
↪
to Kr
↪
to Xe
↪
to Rn
↪
Metals
🦇BAt Line
Nonmetals
1
H
Hydrogen
1.008
2
He
Helium
4.0026
←
3
Li
Lithium
6.94
←
4
Be
Beryllium
9.0122
5
B
Boron
10.81
→
6
C
Carbon
12.011
→
7
N
Nitrogen
14.007
→
8
O
Oxygen
15.999
→
9
F
Fluorine
18.998
10
Ne
Neon
20.180
←
11
Na
Sodium
22.990
←
12
Mg
Magnesium
24.305
←
13
Al
Aluminum
26.982
14
Si
Silicon
28.085
→
15
P
Phosphorus
30.974
→
16
S
Sulfur
32.06
→
17
Cl
Chlorine
35.45
18
Ar
Argon
39.948
←
19
K
Potassium
39.098
←
20
Ca
Calcium
40.078
←
21
Sc
Scandium
44.956
←
22
Ti
Titanium
47.867
←
23
V
Vanadium
50.942
←
24
Cr
Chromium
51.996
←
25
Mn
Manganese
54.938
←
26
Fe
Iron
55.845
←
27
Co
Cobalt
58.933
←
28
Ni
Nickel
58.693
←
29
Cu
Copper
63.546
←
30
Zn
Zinc
65.38
←
31
Ga
Gallium
69.723
←
32
Ge
Germanium
72.630
33
As
Arsenic
74.922
→
34
Se
Selenium
78.971
→
35
Br
Bromine
79.904
36
Kr
Krypton
83.798
←
37
Rb
Rubidium
85.468
←
38
Sr
Strontium
87.62
←
39
Y
Yttrium
88.906
←
40
Zr
Zirconium
91.224
←
41
Nb
Niobium
92.906
←
42
Mo
Molybdenum
95.95
←
43
Tc
Technetium
[98]
←
44
Ru
Ruthenium
101.07
←
45
Rh
Rhodium
102.91
←
46
Pd
Palladium
106.42
←
47
Ag
Silver
107.87
←
48
Cd
Cadmium
112.41
←
49
In
Indium
114.82
←
50
Sn
Tin
118.71
←
51
Sb
Antimony
121.76
52
Te
Tellurium
127.60
→
53
I
Iodine
126.90
54
Xe
Xenon
131.29
←
55
Cs
Cesium
132.91
←
56
Ba
Barium
137.33
←
57
La
Lanthanum
138.91
←
58
Ce
Cerium
140.12
←
59
Pr
Praseodymium
140.91
←
60
Nd
Neodymium
144.24
←
61
Pm
Promethium
[145]
←
62
Sm
Samarium
150.36
←
63
Eu
Europium
151.96
←
64
Gd
Gadolinium
157.25
←
65
Tb
Terbium
158.93
←
66
Dy
Dysprosium
162.50
←
67
Ho
Holmium
164.93
←
68
Er
Erbium
167.26
←
69
Tm
Thulium
168.93
←
70
Yb
Ytterbium
173.05
←
71
Lu
Lutetium
174.97
←
72
Hf
Hafnium
178.49
←
73
Ta
Tantalum
180.95
←
74
W
Tungsten
183.84
←
75
Re
Rhenium
186.21
←
76
Os
Osmium
190.23
←
77
Ir
Iridium
192.22
←
78
Pt
Platinum
195.08
←
79
Au
Gold
196.97
←
80
Hg
Mercury
200.59
←
81
Tl
Thallium
204.38
←
82
Pb
Lead
207.2
←
83
Bi
Bismuth
208.98
←
84
Po
Polonium
[209]
85
At
Astatine
[210]
86
Rn
Radon
[222]
←
87
Fr
Francium
[223]
←
88
Ra
Radium
[226]
←
89
Ac
Actinium
[227]
←
90
Th
Thorium
232.04
←
91
Pa
Protactinium
231.04
←
92
U
Uranium
238.03
←
93
Np
Neptunium
[237]
←
94
Pu
Plutonium
[244]
←
95
Am
Americium
[243]
←
96
Cm
Curium
[247]
←
97
Bk
Berkelium
[247]
←
98
Cf
Californium
[251]
←
99
Es
Einsteinium
[252]
←
100
Fm
Fermium
[257]
←
101
Md
Mendelevium
[258]
←
102
No
Nobelium
[259]
←
103
Lr
Lawrencium
[266]
←
104
Rf
Rutherfordium
[267]
←
105
Db
Dubnium
[268]
←
106
Sg
Seaborgium
[269]
←
107
Bh
Bohrium
[270]
←
108
Hs
Hassium
[277]
←
109
Mt
Meitnerium
[278]
←
110
Ds
Darmstadtium
[281]
←
111
Rg
Roentgenium
[282]
←
112
Cn
Copernicium
[285]
←
113
Nh
Nihonium
[286]
←
114
Fl
Flerovium
[289]
←
115
Mc
Moscovium
[290]
←
116
Lv
Livermorium
[293]
←
117
Ts
Tennessine
[294]
118
Og
Oganesson
[294]