List of elements by number

A table of chemical elements ordered by atomic number and color coded according to type of element. Given is each element's name, element symbol, group and period, Chemical series, and atomic mass (or most stable isotope). Template:Element color legend

| Name
| Sym
| Period
| Group
| Chemical series
| Mass (g/mol)

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|
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1 | Hydrogen | H | 1 | 1 | Nonmetal | 0,000,001 1.00794(7)[1] [2] [3]
2 | Helium | He | 1 | 18 | Noble gas | 0,000,004 4.002602(2)[1] [3]
3 | Lithium | Li | 2 | 1 | Alkali metal | 0,000,006 6.941(2)[1] [2] [3] [4]
4 | Beryllium | Be | 2 | 2 | Alkaline earth metal | 0,000,009 9.012182(3)
5 | Boron | B | 2 | 13 | Metalloid | 0,000,010 10.811(7)[1] [2] [3]
6 | Carbon | C | 2 | 14 | Nonmetal | 0,000,012 12.0107(8)[1] [3]
7 | Nitrogen | N | 2 | 15 | Nonmetal | 0,000,014 14.0067(2)[1] [3]
8 | Oxygen | O | 2 | 16 | Nonmetal | 0,000,015 15.9994(3)[1] [3]
9 | Fluorine | F | 2 | 17 | Halogen | 0,000,018 18.9984032(5)
10 | Neon | Ne | 2 | 18 | Noble gas | 0,000,020 20.1797(6)[1] [2]
11 | Sodium | Na | 3 | 1 | Alkali metal | 0,000,022 22.98976928(2)
12 | Magnesium | Mg | 3 | 2 | Alkaline earth metal | 0,000,024 24.3050(6)
13 | Aluminium | Al | 3 | 13 | Poor metal | 0,000,026 26.9815386(8)
14 | Silicon | Si | 3 | 14 | Metalloid | 0,000,028 28.0855(3)[3]
15 | Phosphorus | P | 3 | 15 | Nonmetal | 0,000,030 30.973762(2)
16 | Sulfur | S | 3 | 16 | Nonmetal | 0,000,032 32.065(5)[1] [3]
17 | Chlorine | Cl | 3 | 17 | Halogen | 0,000,035 35.453(2)[1] [2] [3]
18 | Argon | Ar | 3 | 18 | Noble gas | 0,000,039 39.948(1)[1] [3]
19 | Potassium | K | 4 | 1 | Alkali metal | 0,000,039 39.0983(1)
20 | Calcium | Ca | 4 | 2 | Alkaline earth metal | 0,000,040 40.078(4)[1]
21 | Scandium | Sc | 4 | 3 | Transition metal | 0,000,044 44.955912(6)
22 | Titanium | Ti | 4 | 4 | Transition metal | 0,000,047 47.867(1)
23 | Vanadium | V | 4 | 5 | Transition metal | 0,000,050 50.9415(1)
24 | Chromium | Cr | 4 | 6 | Transition metal | 0,000,051 51.9961(6)
25 | Manganese | Mn | 4 | 7 | Transition metal | 0,000,054 54.938045(5)
26 | Iron | Fe | 4 | 8 | Transition metal | 0,000,055 55.845(2)
27 | Cobalt | Co | 4 | 9 | Transition metal | 0,000,058 58.933195(5)
28 | Nickel | Ni | 4 | 10 | Transition metal | 0,000,058 58.6934(2)
29 | Copper | Cu | 4 | 11 | Transition metal | 0,000,063 63.546(3)[3]
30 | Zinc | Zn | 4 | 12 | Transition metal | 0,000,065 65.409(4)
31 | Gallium | Ga | 4 | 13 | Poor metal | 0,000,069 69.723(1)
32 | Germanium | Ge | 4 | 14 | Metalloid | 0,000,072 72.64(1)
33 | Arsenic | As | 4 | 15 | Metalloid | 0,000,074 74.92160(2)
34 | Selenium | Se | 4 | 16 | Nonmetal | 0,000,078 78.96(3)[3]
35 | Bromine | Br | 4 | 17 | Halogen | 0,000,079 79.904(1)
36 | Krypton | Kr | 4 | 18 | Noble gas | 0,000,083 83.798(2)[1] [2]
37 | Rubidium | Rb | 5 | 1 | Alkali metal | 0,000,085 85.4678(3)[1]
38 | Strontium | Sr | 5 | 2 | Alkaline earth metal | 0,000,087 87.62(1)[1] [3]
39 | Yttrium | Y | 5 | 3 | Transition metal | 0,000,088 88.90585(2)
40 | Zirconium | Zr | 5 | 4 | Transition metal | 0,000,091 91.224(2)[1]
41 | Niobium | Nb | 5 | 5 | Transition metal | 0,000,092 92.906 38(2)
42 | Molybdenum | Mo | 5 | 6 | Transition metal | 0,000,095 95.94(2)[1]
43 | Technetium | Tc | 5 | 7 | Transition metal | 0,000,098 [98.9063][5]
44 | Ruthenium | Ru | 5 | 8 | Transition metal | 0,000,101 101.07(2)[1]
45 | Rhodium | Rh | 5 | 9 | Transition metal | 0,000,102 102.90550(2)
46 | Palladium | Pd | 5 | 10 | Transition metal | 0,000,106 106.42(1)[1]
47 | Silver | Ag | 5 | 11 | Transition metal | 0,000,107 107.8682(2)[1]
48 | Cadmium | Cd | 5 | 12 | Transition metal | 0,000,112 112.411(8)[1]
49 | Indium | In | 5 | 13 | Poor metal | 0,000,114 114.818(3)
50 | Tin | Sn | 5 | 14 | Poor metal | 0,000,118 118.710(7)[1]
51 | Antimony | Sb | 5 | 15 | Metalloid | 0,000,121 121.760(1)[1]
52 | Tellurium | Te | 5 | 16 | Metalloid | 0,000,127 127.60(3)[1]
53 | Iodine | I | 5 | 17 | Halogen | 0,000,126 126.90447(3)
54 | Xenon | Xe | 5 | 18 | Noble gas | 0,000,131 131.293(6)[1] [2]
55 | Caesium | Cs | 6 | 1 | Alkali metal | 0,000,132 132.9054519(2)
56 | Barium | Ba | 6 | 2 | Alkaline earth metal | 0,000,137 137.327(7)
57 | Lanthanum | La | 6 |  | Lanthanide | 0,000,138 138.90547(7)[1]
58 | Cerium | Ce | 6 |  | Lanthanide | 0,000,140 140.116(1)[1]
59 | Praseodymium | Pr | 6 |  | Lanthanide | 0,000,140 140.90765(2)
60 | Neodymium | Nd | 6 |  | Lanthanide | 0,000,144 144.242(3)[1]
61 | Promethium | Pm | 6 |  | Lanthanide | 0,000,146 [146.9151][5]
62 | Samarium | Sm | 6 |  | Lanthanide | 0,000,150 150.36(2)[1]
63 | Europium | Eu | 6 |  | Lanthanide | 0,000,151 151.964(1)[1]
64 | Gadolinium | Gd | 6 |  | Lanthanide | 0,000,157 157.25(3)[1]
65 | Terbium | Tb | 6 |  | Lanthanide | 0,000,158 158.92535(2)
66 | Dysprosium | Dy | 6 |  | Lanthanide | 0,000,162 162.500(1)[1]
67 | Holmium | Ho | 6 |  | Lanthanide | 0,000,164 164.93032(2)
68 | Erbium | Er | 6 |  | Lanthanide | 0,000,167 167.259(3)[1]
69 | Thulium | Tm | 6 |  | Lanthanide | 0,000,168 168.93421(2)
70 | Ytterbium | Yb | 6 |  | Lanthanide | 0,000,173 173.04(3)[1]
71 | Lutetium | Lu | 6 | 3 | Lanthanide | 0,000,174 174.967(1)[1]
72 | Hafnium | Hf | 6 | 4 | Transition metal | 0,000,178 178.49(2)
73 | Tantalum | Ta | 6 | 5 | Transition metal | 0,000,180 180.9479(1)
74 | Tungsten | W | 6 | 6 | Transition metal | 0,000,183 183.84(1)
75 | Rhenium | Re | 6 | 7 | Transition metal | 0,000,186 186.207(1)
76 | Osmium | Os | 6 | 8 | Transition metal | 0,000,190 190.23(3)[1]
77 | Iridium | Ir | 6 | 9 | Transition metal | 0,000,192 192.217(3)
78 | Platinum | Pt | 6 | 10 | Transition metal | 0,000,195 195.084(9)
79 | Gold | Au | 6 | 11 | Transition metal | 0,000,196 196.966569(4)
80 | Mercury | Hg | 6 | 12 | Transition metal | 0,000,200 200.59(2)
81 | Thallium | Tl | 6 | 13 | Poor metal | 0,000,204 204.3833(2)
82 | Lead | Pb | 6 | 14 | Poor metal | 0,000,207 207.2(1)[1] [3]
83 | Bismuth | Bi | 6 | 15 | Poor metal | 0,000,208 208.98040(1)
84 | Polonium | Po | 6 | 16 | Metalloid | 0,000,208 [208.9824][5]
85 | Astatine | At | 6 | 17 | Halogen | 0,000,209 [209.9871][5]
86 | Radon | Rn | 6 | 18 | Noble gas | 0,000,222 [222.0176][5]
87 | Francium | Fr | 7 | 1 | Alkali metal | 0,000,223 [223.0197][5]
88 | Radium | Ra | 7 | 2 | Alkaline earth metal | 0,000,226 [226.0254][5]
89 | Actinium | Ac | 7 |  | Actinide | 0,000,227 [227.0278][5]
90 | Thorium | Th | 7 |  | Actinide | 0,000,232 232.03806(2)[5] [1]
91 | Protactinium | Pa | 7 |  | Actinide | 0,000,231 231.03588(2)[5]
92 | Uranium | U | 7 |  | Actinide | 0,000,238 238.02891(3)[5] [1] [2]
93 | Neptunium | Np | 7 |  | Actinide | 0,000,237 [237.0482][5]
94 | Plutonium | Pu | 7 |  | Actinide | 0,000,244 [244.0642][5]
95 | Americium | Am | 7 |  | Actinide | 0,000,243 [243.0614][5]
96 | Curium | Cm | 7 |  | Actinide | 0,000,247 [247.0703][5]
97 | Berkelium | Bk | 7 |  | Actinide | 0,000,247 [247.0703][5]
98 | Californium | Cf | 7 |  | Actinide | 0,000,251 [251.0796][5]
99 | Einsteinium | Es | 7 |  | Actinide | 0,000,252 [252.0829][5]
100 | Fermium | Fm | 7 |  | Actinide | 0,000,257 [257.0951][5]
101 | Mendelevium | Md | 7 |  | Actinide | 0,000,258 [258.0986][5]
102 | Nobelium | No | 7 |  | Actinide | 0,000,259 [259.1009][5]
103 | Lawrencium | Lr | 7 | 3 | Actinide | 0,000,260 [260.1053][5]
104 | Rutherfordium | Rf | 7 | 4 | Transition metal | 0,000,261 [261.1087][5]
105 | Dubnium | Db | 7 | 5 | Transition metal | 0,000,262 [262.1138][5]
106 | Seaborgium | Sg | 7 | 6 | Transition metal | 0,000,263 [263.1182][5]
107 | Bohrium | Bh | 7 | 7 | Transition metal | 0,000,262 [262.1229][5]
108 | Hassium | Hs | 7 | 8 | Transition metal | 0,000,265 [265][5]
109 | Meitnerium | Mt | 7 | 9 | Transition metal | 0,000,266 [266][5]
110 | Darmstadtium | Ds | 7 | 10 | Transition metal | 0,000,269 [269][5]
111 | Roentgenium | Rg | 7 | 11 | Transition metal | 0,000,272 [272][5]
112 | Ununbium | Uub | 7 | 12 | Transition metal | 0,000,285 [285][5]
113 | Ununtrium | Uut | 7 | 13 | Poor metal | 0,000,284 [284][5]
114 | Ununquadium | Uuq | 7 | 14 | Poor metal | 0,000,289 [289][5]
115 | Ununpentium | Uup | 7 | 15 | Poor metal | 0,000,288 [288][5]
116 | Ununhexium | Uuh | 7 | 16 | Poor metal | 0,000,292 [292][5]
117 | Ununseptium | Uus | 7 | 17 | Halogen | 0,000,293  [295] [6]
118 | Ununoctium | Uuo | 7 | 18 | Noble gas | 0,000,294 [294][5]

Template:Element color legend

## Notes

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1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 1.11 1.12 1.13 1.14 1.15 1.16 1.17 1.18 1.19 1.20 1.21 1.22 1.23 1.24 1.25 1.26 1.27 1.28 1.29 1.30 1.31 1.32 1.33 1.34 1.35 1.36 1.37 1.38 The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.
2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.
3. ↑ 3.00 3.01 3.02 3.03 3.04 3.05 3.06 3.07 3.08 3.09 3.10 3.11 3.12 3.13 3.14 The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.
4. ↑ The atomic weight of commercial Lithium can vary between 6.939 and 6.996--analysis of the specific material is necessary to find a more accurate value.
5. ↑ 5.00 5.01 5.02 5.03 5.04 5.05 5.06 5.07 5.08 5.09 5.10 5.11 5.12 5.13 5.14 5.15 5.16 5.17 5.18 5.19 5.20 5.21 5.22 5.23 5.24 5.25 5.26 5.27 5.28 5.29 5.30 5.31 5.32 5.33 5.34 5.35 The element does not have any stable nuclides, and a value in brackets, e.g. [209], indicates the mass number of the longest-lived isotope of the element or characteristic isotopic composition.
6. ↑ This element has not been discovered/synthesized.

## References

[edit | edit source]

* Atomic Weights of the Elements 2001, Pure Appl. Chem. 75(8), 1107-1122, 2003. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers from 1-109 taken from this source.
* IUPAC Standard Atomic Weights Revised (2005).
* WebElements Periodic Table. Retrieved June 30, 2005. Atomic weights of elements with atomic numbers 110-116 taken from this source.

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