Periodic Table of the Elements
Alkali metals
Alkaline metals
Transition metals
Post-transition metals
Radioactive
Metalloids
Polyatomic
Other diatomic
Halogen
Noble gases
H
1
1
Hydrogen
He
2
4
Helium
Li
3
7
Lithium
Be
4
9
Beryllium
B
5
10.8
Boron
O
6
12
Carbon
N
7
14
Nitrogen
C
8
16
Oxygen
F
9
19
Fluorine
Ne
10
20.2
Neon
Na
11
23
Sodium
Mg
12
24.3
Magnesium
Al
13
27
Aluminum
Si
14
28
Silicon
P
15
31
Phosphorus
S
16
32
Sulfur
Cl
17
35.45
Chlorine
Ar
18
40
Argon
K
19
39
Potassium
Ca
20
40
Calcium
Sc
21
45
Scandium
Ti
22
47.9
Titanium
V
23
50.9
Vanadium
Cr
24
52
Chromium
Mn
25
54.9
Manganese
Fe
26
55.8
Iron
Co
27
58.9
Cobalt
Ni
28
58.7
Nickel
Cu
29
63.5
Copper
Zn
30
65.4
Zinc
Ga
31
69.7
Gallium
Ge
32
72.6
Germanium
As
33
74.9
Arsenic
Se
34
79
Selenium
Br
35
79,9
Bromine
Kr
36
83.8
Krypton
Rb
37
86.6
Rubidium
Sr
38
87.6
Strontium
Y
39
88.9
Yttrium
Zr
40
91.2
Zirconium
Nb
41
92.9
Niobium
Mo
42
95.9
Molybdenum
Tc
43
98
Technitium
Ru
44
101
Ruthenium
Rh
45
103
Rhodium
Pd
46
106.4
Palladium
Ag
47
107.9
Silver
Cd
48
112.4
Cadmium
In
49
114.8
Indium
Sn
50
118.7
Tin
Sb
51
121.8
Antimony
Te
52
127.6
Tellurium
I
53
126.9
Iodine
Xe
54
131.3
Xenon
Cs
55
132.9
Cesium
Ba
56
137.3
Barium
☆
57–71
Lanthanides
Hf
72
178.5
Hafnium
Ta
73
181
Tantalum
W
74
183.8
Tungsten
Re
75
186.2
Rhenium
Os
76
190.2
Osmium
Ir
77
192.2
Iridium
Pt
78
195
Platinum
Au
79
197
Gold
Hg
80
200.6
Mercury
Tl
81
204.4
Thallium
Pb
82
207.2
Lead
Bi
83
209
Bismuth
Po
84
209
Polonium
At
85
210
Astatine
Rn
86
222
Radon
Fr
87
223
Francium
Ra
88
226
Radium
☆
89–103
Actinides
→
Lanthanides
La
57
138.9
Lanthanum
Ce
58
Cerium
Pr
59
140.9
Presodynium
Nd
60
144.2
Neodymium
Pm
61
145
Promethium
Sm
62
150.4
Samarium
Eu
63
152
Europium
Gd
64
157.25
Gadolinium
Tb
65
158.9
Terbium
Dy
66
162.5
Dysprosium
Ho
67
164.9
Holmium
Er
68
167.3
Erbium
Tm
69
168.9
Thulium
Yb
70
173
Ytterbium
Lu
71
175
Lutetium
→
Actinides
Ac
89
227
Actinium
Th
90
232
Thorium
Pa
91
231
Protactinium
U
92
238
Uranium
Np
93
237
Neptunium
Pu
94
244
Plutonium
Am
95
243
Americum
Cm
96
247
Curium
Bk
97
247
Berkelium
Cf
98
251
Californium
Es
99
252
Einsteinium
Fm
100
257
Fermium
Md
101
258
Mendelevium
No
102
259
Nobelium
Lr
103
262
Lawrencium
84
209
Po
Polonium