List of elements by atomic number

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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, and atomic mass (or most stable isotope).

Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases
Atomic number Name Symbol Period, Group Mass (g/mol)
1HydrogenH1, 11.00794(7)<ref name="fn_2">The isotopic composition of this element varies in some geological specimens, and the variation may exceed the uncertainty stated in the table.</ref> <ref name="fn_3">The isotopic composition of the element can vary in commercial materials, which can cause the atomic weight to deviate significantly from the given value.</ref> <ref name="fn_4">The isotopic composition varies in terrestrial material such that a more precise atomic weight can not be given.</ref>
2HeliumHe1, 184.002602(2)<ref name="fn_2" /> <ref name="fn_4" />
3LithiumLi2, 16.941(2)<ref name="fn_2" /> <ref name="fn_3" /> <ref name="fn_4" /> <ref>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.</ref>
4BerylliumBe2, 29.012182(3)
5BoronB2, 1310.811(7)<ref name="fn_2" /> <ref name="fn_3" /> <ref name="fn_4" />
6CarbonC2, 1412.0107(8)<ref name="fn_2" /> <ref name="fn_4" />
7NitrogenN2, 1514.0067(2)<ref name="fn_2" /> <ref name="fn_4" />
8OxygenO2, 1615.9994(3)<ref name="fn_2" /> <ref name="fn_4" />
9FluorineF2, 1718.9984032(5)
10NeonNe2, 1820.1797(6)<ref name="fn_2" /> <ref name="fn_3" />
11SodiumNa3, 122.98976928(2)
12MagnesiumMg3, 224.3050(6)
13AluminiumAl3, 1326.9815386(8)
14SiliconSi3, 1428.0855(3)<ref name="fn_4" />
15PhosphorusP3, 1530.973762(2)
16SulfurS3, 1632.065(5)<ref name="fn_2" /> <ref name="fn_4" />
17ChlorineCl3, 1735.453(2)<ref name="fn_2" /> <ref name="fn_3" /> <ref name="fn_4" />
18ArgonAr3, 1839.948(1)<ref name="fn_2" /> <ref name="fn_4" />
19PotassiumK4, 139.0983(1)
20CalciumCa4, 240.078(4)<ref name="fn_2" />
21ScandiumSc4, 344.955912(6)
22TitaniumTi4, 447.867(1)
23VanadiumV4, 550.9415(1)
24ChromiumCr4, 651.9961(6)
25ManganeseMn4, 754.938045(5)
26IronFe4, 855.845(2)
27CobaltCo4, 958.933195(5)
28NickelNi4, 1058.6934(2)
29CopperCu4, 1163.546(3)<ref name="fn_4" />
30ZincZn4, 1265.409(4)
31GalliumGa4, 1369.723(1)
32GermaniumGe4, 1472.64(1)
33ArsenicAs4, 1574.92160(2)
34SeleniumSe4, 1678.96(3)<ref name="fn_4" />
35BromineBr4, 1779.904(1)
36KryptonKr4, 1883.798(2)<ref name="fn_2" /> <ref name="fn_3" />
37RubidiumRb5, 185.4678(3)<ref name="fn_2" />
38StrontiumSr5, 287.62(1)<ref name="fn_2" /> <ref name="fn_4" />
39YttriumY5, 388.90585(2)
40ZirconiumZr5, 491.224(2)<ref name="fn_2" />
41NiobiumNb5, 592.906 38(2)
42MolybdenumMo5, 695.94(2)<ref name="fn_2" />
43TechnetiumTc5, 7[98.9063]<ref name="fn_1">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.</ref>
44RutheniumRu5, 8101.07(2)<ref name="fn_2" />
45RhodiumRh5, 9102.90550(2)
46PalladiumPd5, 10106.42(1)<ref name="fn_2" />
47SilverAg5, 11107.8682(2)<ref name="fn_2" />
48CadmiumCd5, 12112.411(8)<ref name="fn_2" />
49IndiumIn5, 13114.818(3)
50TinSn5, 14118.710(7)<ref name="fn_2" />
51AntimonySb5, 15121.760(1)<ref name="fn_2" />
52TelluriumTe5, 16127.60(3)<ref name="fn_2" />
53IodineI5, 17126.90447(3)
54XenonXe5, 18131.293(6)<ref name="fn_2" /> <ref name="fn_3" />
55CaesiumCs6, 1132.9054519(2)
56BariumBa6, 2137.327(7)
57LanthanumLa6138.90547(7)<ref name="fn_2" />
58CeriumCe6140.116(1)<ref name="fn_2" />
59PraseodymiumPr6140.90765(2)
60NeodymiumNd6144.242(3)<ref name="fn_2" />
61PromethiumPm6[146.9151]<ref name="fn_1" />
62SamariumSm6150.36(2)<ref name="fn_2" />
63EuropiumEu6151.964(1)<ref name="fn_2" />
64GadoliniumGd6157.25(3)<ref name="fn_2" />
65TerbiumTb6158.92535(2)
66DysprosiumDy6162.500(1)<ref name="fn_2" />
67HolmiumHo6164.93032(2)
68ErbiumEr6167.259(3)<ref name="fn_2" />
69ThuliumTm6168.93421(2)
70YtterbiumYb6173.04(3)<ref name="fn_2" />
71LutetiumLu6, 3174.967(1)<ref name="fn_2" />
72HafniumHf6, 4178.49(2)
73TantalumTa6, 5180.9479(1)
74TungstenW6, 6183.84(1)
75RheniumRe6, 7186.207(1)
76OsmiumOs6, 8190.23(3)<ref name="fn_2" />
77IridiumIr6, 9192.217(3)
78PlatinumPt6, 10195.084(9)
79GoldAu6, 11196.966569(4)
80MercuryHg6, 12200.59(2)
81ThalliumTl6, 13204.3833(2)
82LeadPb6, 14207.2(1)<ref name="fn_2" /> <ref name="fn_4" />
83BismuthBi6, 15208.98040(1)
84PoloniumPo6, 16[208.9824]<ref name="fn_1" />
85AstatineAt6, 17[209.9871]<ref name="fn_1" />
86RadonRn6, 18[222.0176]<ref name="fn_1" />
87FranciumFr7, 1[223.0197]<ref name="fn_1" />
88RadiumRa7, 2[226.0254]<ref name="fn_1" />
89ActiniumAc7[227.0278]<ref name="fn_1" />
90ThoriumTh7232.03806(2)<ref name="fn_1" /> <ref name="fn_2" />
91ProtactiniumPa7231.03588(2)<ref name="fn_1" />
92UraniumU7238.02891(3)<ref name="fn_1" /> <ref name="fn_2" /> <ref name="fn_3" />
93NeptuniumNp7[237.0482]<ref name="fn_1" />
94PlutoniumPu7[244.0642]<ref name="fn_1" />
95AmericiumAm7[243.0614]<ref name="fn_1" />
96CuriumCm7[247.0703]<ref name="fn_1" />
97BerkeliumBk7[247.0703]<ref name="fn_1" />
98CaliforniumCf7[251.0796]<ref name="fn_1" />
99EinsteiniumEs7[252.0829]<ref name="fn_1" />
100FermiumFm7[257.0951]<ref name="fn_1" />
101MendeleviumMd7[258.0986]<ref name="fn_1" />
102NobeliumNo7[259.1009]<ref name="fn_1" />
103LawrenciumLr7, 3[260.1053]<ref name="fn_1" />
104RutherfordiumRf7, 4[261.1087]<ref name="fn_1" />
105DubniumDb7, 5[262.1138]<ref name="fn_1" />
106SeaborgiumSg7, 6[263.1182]<ref name="fn_1" />
107BohriumBh7, 7[262.1229]<ref name="fn_1" />
108HassiumHs7, 8[265]<ref name="fn_1" />
109MeitneriumMt7, 9[266]<ref name="fn_1" />
110DarmstadtiumDs7, 10[269]<ref name="fn_1" />
111RoentgeniumRg7, 11[272]<ref name="fn_1" />
112UnunbiumUub7, 12[285]<ref name="fn_1" />
113UnuntriumUut7, 13[284]<ref name="fn_1" />
114UnunquadiumUuq7, 14[289]<ref name="fn_1" />
115UnunpentiumUup7, 15[288]<ref name="fn_1" />
116UnunhexiumUuh7, 16[292]<ref name="fn_1" />
117UnunseptiumUus7, 17<ref>This element has not been discovered.</ref>
118UnunoctiumUuo7, 18[294]<ref name="fn_1" />
Chemical series of the periodic table
Alkali metals Alkaline earth metals Lanthanides Actinides Transition metals
Poor metals Metalloids Nonmetals Halogens Noble gases

[edit] Notes

<references />

[edit] References

Periodic tables

Standard table | Vertical table | Table with names | Names and atomic masses (large) | Names and atomic masses (small) | Names and atomic masses (text only) | Inline F-block | Elements to 218 | Electron configurations | Metals and nonmetals | Table by blocks | Alternatives

Lists of elements

Name | Atomic symbol | Atomic number | Boiling point | Melting point | Density | Atomic mass

Groups:   1 -  2 -  3 -  4 -  5 -  6 -  7 -  8 -  9 - 10 - 11 - 12 - 13 - 14 - 15 - 16 - 17 - 18
Periods:  1  -  2  -  3  -  4  -  5  -  6  -  7  -  8  -  9
Series:   Alkalis  -  Alkaline earths  -  Lanthanides  -  Actinides  -  Transition metals  -  Poor metals  -  Metalloids  -  Nonmetals  -  Halogens  -  Noble gases
Blocks:  s-block  -  p-block  -  d-block  -  f-block  -  g-block

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List of elements by atomic number

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