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Chemistry ➩ Periodic Table Elements

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List of Periodic Table elements sorted by → Atomic number
No. * Atomic
weight
Name Sym. M.P.
(°C)
B.P.
(°C)
Density*
(g/cm3)
Earth
(%)*
Group* Electron configuration
11.008HydrogenH-259-2530.090.1411s
24.002HeliumHe-272-2690.18181s2
36.940LithiumLi1801,3470.5311s22s
49.012BerylliumBe1,2782,9701.8521s22s2
510.810BoronB2,3002,5502.34131s22s22p
612.011CarbonC3,5004,8272.260.09141s22s22p2
714.007NitrogenN-210-1961.25151s22s22p3
815.999OxygenO-218-1831.4346.71161s22s22p4
918.998FluorineF-220-1881.700.03171s22s22p5
1020.180NeonNe-249-2460.90181s22s22p6
1122.989SodiumNa988830.972.751[Ne]3s
1224.305MagnesiumMg6391,0901.742.082[Ne]3s2
1326.981AluminumAl6602,4672.708.0713[Ne]3s23p
1428.085SiliconSi1,4102,3552.3327.6914[Ne]3s23p2
1530.973PhosphorusP442801.820.1315[Ne]3s23p3
1632.060SulfurS1134452.070.0516[Ne]3s23p4
1735.450ChlorineCl-101-353.210.0517[Ne]3s23p5
1839.950ArgonAr-189-1861.7818[Ne]3s23p6
1939.098PotassiumK647740.862.581[Ar]4s
2040.078CalciumCa8391,4841.553.652[Ar]4s2
2144.955ScandiumSc1,5392,8322.993[Ar]3d4s2
2247.867TitaniumTi1,6603,2874.540.624[Ar]3d24s2
2350.942VanadiumV1,8903,3806.115[Ar]3d34s2
2451.996ChromiumCr1,8572,6727.190.046[Ar]3d54s
2554.938ManganeseMn1,2451,9627.430.097[Ar]3d54s2
2655.845IronFe1,5352,7507.875.058[Ar]3d64s2
2758.933CobaltCo1,4952,8708.909[Ar]3d74s2
2858.693NickelNi1,4532,7328.900.0210[Ar]3d84s2
2963.546CopperCu1,0832,5678.9611[Ar]3d104s
3065.380ZincZn4209077.1312[Ar]3d104s2
3169.723GalliumGa302,4035.9113[Ar]3d104s24p
3272.630GermaniumGe9372,8305.3214[Ar]3d104s24p2
3374.921ArsenicAs816135.7215[Ar]3d104s24p3
3478.971SeleniumSe2176854.7916[Ar]3d104s24p4
3579.904BromineBr-7593.1217[Ar]3d104s24p5
3683.798KryptonKr-157-1533.7518[Ar]3d104s24p6
3785.468RubidiumRb396881.631[Kr]5s
3887.620StrontiumSr7691,3842.542[Kr]5s2
3988.905YttriumY1,5233,3374.473[Kr]4d5s2
4091.224ZirconiumZr1,8524,3776.510.034[Kr]4d25s2
4192.906NiobiumNb2,4684,9278.575[Kr]4d45s
4295.950MolybdenumMo2,6174,61210.226[Kr]4d55s
43*97.000TechnetiumTc2,2004,87711.507[Kr]4d55s2
44101.070RutheniumRu2,2503,90012.378[Kr]4d75s
45102.905RhodiumRh1,9663,72712.419[Kr]4d85s
46106.420PalladiumPd1,5522,92712.0210[Kr]4d10
47107.868SilverAg9622,21210.5011[Kr]4d105s
48112.414CadmiumCd3217658.6512[Kr]4d105s2
49114.818IndiumIn1572,0007.3113[Cd]5p
50118.710TinSn2322,2707.3114[Cd]5p2
51121.760AntimonySb6301,7506.6815[Cd]5p3
52127.600TelluriumTe4499906.2416[Cd]5p4
53126.904IodineI1141844.9317[Cd]5p5
54131.293XenonXe-112-1085.9018[Cd]5p6
55132.905CesiumCs296781.871[Xe]6s
56137.327BariumBa7251,1403.590.052[Xe]6s2
57138.905LanthanumLa9203,4696.153[Xe]5d6s2
58140.116CeriumCe7953,2576.77101[Xe]4f5d6s2
59140.907PraseodymiumPr9353,1276.77101[Xe]4f36s2
60144.242NeodymiumNd1,0103,1277.01101[Xe]4f46s2
61*145.000PromethiumPm1,1003,0007.30101[Xe]4f56s2
62150.360SamariumSm1,0721,9007.52101[Xe]4f66s2
63151.964EuropiumEu8221,5975.24101[Xe]4f76s2
64157.250GadoliniumGd1,3113,2337.90101[Xe]4f75d6s2
65158.925TerbiumTb1,3603,0418.23101[Xe]4f96s2
66162.500DysprosiumDy1,4122,5628.55101[Xe]4f106s2
67164.930HolmiumHo1,4702,7208.80101[Xe]4f116s2
68167.259ErbiumEr1,5222,5109.07101[Xe]4f126s2
69168.934ThuliumTm1,5451,7279.32101[Xe]4f136s2
70173.045YtterbiumYb8241,4666.90101[Xe]4f146s2
71174.967LutetiumLu1,6563,3159.84101[Xe]4f145d6s2
72178.486HafniumHf2,1505,40013.314[Xe]4f145d26s2
73180.947TantalumTa2,9965,42516.655[Xe]4f145d36s2
74183.840TungstenW3,4105,66019.356[Xe]4f145d46s2
75186.207RheniumRe3,1805,62721.047[Xe]4f145d56s2
76190.230OsmiumOs3,0455,02722.608[Xe]4f145d66s2
77192.217IridiumIr2,4104,52722.409[Xe]4f145d76s2
78195.084PlatinumPt1,7723,82721.4510[Xe]4f145d96s
79196.966GoldAu1,0642,80719.3211[Xe]4f145d106s
80200.592MercuryHg-3935713.5512[Xe]4f145d106s2
81204.380ThalliumTl3031,45711.8513[Hg]6p
82207.200LeadPb3271,74011.3514[Hg]6p2
83208.980BismuthBi2711,5609.7515[Hg]6p3
84*209.000PoloniumPo2549629.3016[Hg]6p4
85*210.000AstatineAt3023377.0017[Hg]6p5
86*222.000RadonRn-71-629.7318[Hg]6p6
87*223.000FranciumFr276770.001[Rn]7s
88*226.000RadiumRa7001,7375.502[Rn]7s2
89*227.000ActiniumAc1,0503,20010.073[Rn]6d7s2
90232.038ThoriumTh1,7504,79011.72102[Rn]6d27s2
91231.035ProtactiniumPa1,568015.40102[Rn]5f26d7s2
92238.028UraniumU1,1323,81818.95102[Rn]5f36d7s2
93*237.000NeptuniumNp6403,90220.20102[Rn]5f46d7s2
94*244.000PlutoniumPu6403,23519.84102[Rn]5f67s2
95*243.000AmericiumAm9942,60713.67102[Rn]5f77s2
96*247.000CuriumCm1,340013.50102[Rn]5f76d7s2
97*247.000BerkeliumBk986014.78102[Rn]5f97s2
98*251.000CaliforniumCf900015.10102[Rn]5f107s2
99*252.000EinsteiniumEs86000.00102[Rn]5f117s2
100*257.000FermiumFm1,52700.00102[Rn]5f127s2
101*258.000MendeleviumMd000.00102[Rn]5f137s2
102*259.000NobeliumNo82700.00102[Rn]5f147s2
103*262.000LawrenciumLr1,62700.00102[Rn]5f147s27p
104*267.000RutherfordiumRf000.004[Rn]5f146d27s2
105*270.000DubniumDb000.005[Rn]5f146d37s2
106*269.000SeaborgiumSg000.006[Rn]5f146d47s2
107*270.000BohriumBh000.007[Rn]5f146d57s2
108*0.000HassiumHs000.008[Rn]5f146d67s2
109*0.000MeitneriumMt000.009
1100.000Ds000.00
1110.000Rg000.00
1120.000Cn000.00
1130.000Nh000.00
1140.000Fl000.00
1150.000Mc000.00
1160.000Lv000.00
1170.000Ts000.00
1180.000Og000.00
No. A. weight Name Sym. M.P. B.P. Density* Earth* Group* Electron configuration

Abbreviations and definitions:

No. - Atomic Number; M.P.: Melting point; B.P.: Boiling point

↑ Top of table

Footnotes:

Abbreviations and Definitions:

No. - Atomic Number; A. weight - Atomic weight; M.P. - Melting point; B.P. - Boiling point

Atomic number: The number of protons in an atom. Each element is uniquely defined by its atomic number.

Atomic mass: The mass of an atom is primarily determined by the number of protons and neutrons in its nucleus. Atomic mass is measured in Atomic Mass Units (amu), which are scaled relative to carbon, 12C, that is taken as a standard element with an atomic mass of 12. This isotope of carbon has 6 protons and 6 neutrons. Thus, each proton and neutron has a mass of about 1 amu.

Isotope: Atoms of the same element with the same atomic number, but a different number of neutrons. The isotope of an element is defined by the sum of the number of protons and neutrons in its nucleus. Elements have more than one isotope with varying numbers of neutrons. For example, the two common isotopes of carbon, 12C and 13C, have 6 and 7 neutrons, respectively. The abundance of each isotope depends on the source of materials. For relative abundances of isotopes in nature, see reference on Atomic Weights and Isotopic Compositions.

Atomic weight: Atomic weight values represent weighted average of the masses of all naturally occurring isotopes of an element. The values shown here are based on the IUPAC Commission determinations based on the 2021 Table: https://iupac.qmul.ac.uk/AtWt/.
Reference: Standard atomic weights of the elements 2021 (IUPAC Technical Report)

The elements marked with an asterisk have no stable nuclides. For these elements, the weight value represents the mass number of the longest-lived isotope of the element.

Electron configuration: See next page for explanation of electron configuration of atoms.

Other resources related to the Periodic Table

Citation for the page

Israel Chemistry Directory. (2024, December 25). "Sortable list of elements of the Periodic Table". Retrieved from https://www.science.co.il/elements/