118 Chemical Elements

The Periodic Table of Elements

Explore the building blocks of matter. Click on any element to discover its properties, history, and fascinating facts.

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

Element Categories

Alkali Metals

6 elements

Highly reactive metals in Group 1

Alkaline Earth Metals

6 elements

Reactive metals in Group 2

Transition Metals

38 elements

Metals with partially filled d-orbitals

Post-Transition Metals

11 elements

Metals between transition metals and metalloids

Metalloids

7 elements

Elements with properties of both metals and nonmetals

Nonmetals

7 elements

Elements that lack metallic properties

Halogens

6 elements

Highly reactive nonmetals in Group 17

Noble Gases

7 elements

Unreactive gases in Group 18

Lanthanides

15 elements

Rare earth elements (57-71)

Actinides

15 elements

Radioactive elements (89-103)