| Relative Atomic Mass
Symbol
Name
Atomic Number | |
| |
| |
|
| Period | 1 | 2 | Group | 3 | 4 | 5 | 6 | 7 | 8 |
| |
| |
| 1 | 1.01
H
Hydrogen
1 | | 4.00
He
Helium
2 |
| |
| |
| 2 | 6.94
Li
Lithium
3 | 9.01
Be
Beryllium
4 | | 10.81
B
Boron
5 | 12.01
C
Carbon
6 | 14.01
N
Nitrogen
7 | 16.00
O
Oxygen
8 | 19.00
F
Fluorine
9 | 20.18
Ne
Neon
10 |
| 3 | 22.99
Na
Sodium
11 | 24.31
Mg
Magnesium
12 | transition metals | 26.92
Al
Aluminium
13 | 28.09
Si
Silicon
14 | 30.97
P
Phosphorus
15 | 32.06
S
Sulfur
16 | 35.45
Cl
Chlorine
17 | 39.95
Ar
Argon
18 |
| 4 | 39.10
K
Potassium
19 | 40.08
Ca
Calcium
20 | 44.96
Sc
Scandium
21 | 47.90
Ti
Titanium
22 | 50.94
V
Vanadium
23 | 52.00
Cr
Chromium
24 | 54.94
Mn
Manganese
25 | 55.85
Fe
Iron
26 | 58.93
Co
Cobalt
27 | 58.71
Ni
Nickel
28 | 63.55
Cu
Copper
29 | 65.38
Zn
Zinc
30 | 69.74
Ga
Gallium
31 | 72.59
Ge
Germanium
32 | 74.92
As
Arsenic
33 | 78.96
Se
Selenium
34 | 79.92
Br
Bromine
35 | 83.80
Kr
Krypton
36 |
| 5 | 85.47
Rb
Rubidium
37 | 87.62
Sr
Strontium
38 | 88.91
Y
Ytterbium
39 | 91.22
Zr
Zirconium
40 | 92.91
Nb
Niobium
41 | 95.94
Mo
Molybdenum
42 | 98.91
Tc
Technetium
43 | 101.07
Ru
Ruthenium
44 | 106.21
Re
Rhenium
45 | 106.40
Pd
Palladium
46 | 107.87
Ag
Silver
47 | 112.41
Cd
Cadmium
48 | 114.82
In
Indium
49 | 118.69
Sn
Tin
50 | 121.75
Sb
Antimony
51 | 127.60
Te
Tellurium
52 | 126.90
I
Iodine
53 | 131.30
Xe
Xenon
54 |
| 6 | 132.91
Cs
Caesium
55 | 137.33
Ba
Barium
56 | 138.91
La
Lanthanum
57 | 178.49
Hf
Hafnium
72 | 180.95
Ta
Tantalum
73 | 183.85
W
Tungsten
74 | 186.21
Re
Rhenium
75 | 190.20
Os
Osmium
76 | 192.22
Ir
Iridium
77 | 195.09
Pt
Platinum
78 | 196.97
Au
Gold
79 | 200.59
Hg
Mercury
80 | 204.37
Tl
Thallium
81 | 207.17
Pb
Lead
82 | 208.98
Bi
Bismuth
83 | 210.00
Po
Polonium
84 | 209.99
At
Astatine
85 | 222.02
Rn
Radon
86 |
| 7 | 223.02
Fr
Francium
87 | 226.03
Ra
Radium
88 | 227.03
Ac
Actinium
89 | (260)
Rf
Rutherfordium
104 | (268)
Db
Dubnium
105 | (269)
Sg
Seaborgium
106 | (278)
Bh
Bohrium
107 |
Hs
Hassium
108 |
Mt
Meitnerium
109 |
Ds
Darmstadtium
110 |
Rg
Roentgenium
111 |
Cn
Coppernicium
112 |
Nh
Nihonium
113 |
Fl
Flerovium
114 |
Mc
Moscovium
115 |
Lv
Livermorium
116 |
Ts
Tennessine
117 |
Og
Oganesson
118 |
| |
| |
| 6 | This row fits between lanthanum (57) and hafnium (72). | 140.12
Ce
Cerium
58 | 140.90
Pr
Praseodymium
59 | 144.24
Nd
Neodymium
60 | 144.91
Pm
Promethium
61 | 150.35
Sm
Samarium
62 | 151.96
Eu
Europium
63 | 157.25
Gd
Gadolinium
64 | 158.93
Tb
Terbium
65 | 162.50
Dy
Dysprosium
66 | 164.93
Ho
Holmium
67 | 167.26
Er
Erbium
68 | 168.93
Tm
Thullium
69 | 173.04
Yb
Ytterbium
70 | 174.97
Lu
Lutetium
71 | |
| 7 | This row fits between actinium (89) and rutherfordium (104). | 232.04
Th
Thorium
90 | 231.04
Pa
Protactinium
91 | 238.03
U
Uranium
92 | 239.05
Np
Neptunium
93 | 239.05
Pu
Plutonium
94 | 243.06
Am
Americium
95 | 247.07
Cu
Curium
96 | 247.07
Bk
Berkelium
97 | 252.08
Cf
Californium
98 | 254.09
Es
Einsteinium
99 | 253.09
Fm
Fermium
100 | 257.10
Md
Mendelevium
101 | 255.09
No
Nobelium
102 | (257)
Lr
Lawrencium
103 | |