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H
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D
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Chemical Elements

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Chemical Calculators | Atomic Collider Simulation
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He
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Li
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Be
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B
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C
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 7
N
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O
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F
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Ne
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Na
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Mg
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Al
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Si
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P
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S
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Cl
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Ar
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K
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Ca
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Sc
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Ti
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V
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Cr
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Mn
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Fe
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Co
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Ni
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Cu
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Zn
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Ga
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Ge
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As
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Se
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Br
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Kr
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Rb
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Sr
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Y
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Zr
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Nb
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Mo
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Tc
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Ru
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Rh
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Pd
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Ag
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Cd
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In
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Sn
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Sb
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Te
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I
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 54
Xe
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Cs
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Ba
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 57-71
La-Lu

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Hf
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Ta
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W
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Re
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Os
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Ir
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Pt
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Au
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Hg
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Tl
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Pb
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Bi
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Po
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At
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Rn
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Fr
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Ra
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 89-103
Ac-Lr

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Rf

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Db

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Sg

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Bh

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Hs

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Mt

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Ds

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Rg

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Cn

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Nh

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Fl

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Mc

 116
Lv

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Ts

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Og

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La
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Ce
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Pr
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Nd
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Pm
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Sm
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Eu
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Gd
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Tb
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Dy
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Ho
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Er
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Tm
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Yb
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Lu
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Islands of Stability
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Ac
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Th
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Pa
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U
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Np
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Pu
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Am
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Cm
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Bk
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Cf
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Es
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Fm
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Md
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No
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Lr

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List of chemical elements with properties


The element number is identical to the amount of protons in the atom nucleus. The amount of neutrons of an element varies, two atoms with the same amount of protons and neutrons are of the same isotope. You'll get the number of neutrons, if you subtract the number of protons from the atomic mass of an isotope. E.g. 56Fe has 56 - 26 = 30 neutrons.

Period refers to the horizontal, group to the vertical position.
The unit of the mass is u (or g/mol), the unified atomic mass unit. This is 1/12 of the mass of 12C, or 1.660538782 *10-24 gramms.
The radius is the empirically measured atomic radius (at noble gases the calculated radius) and is given in 10-12 meters (pikometers).
Valence el. stands for the number of valence electrons. At transition metals, this number is meaningless and therefore obmitted.
Melting- and boiling point refer to standard pressure (1013 millibar) and are given in Kelvin. At standard pressure helium has no solid state, arsenic has no liquid state.
The density is given in g/cm3, at gases flagged with * in g/L (=1/1000 g/cm3), at 20° C.
~ stands for approximately, when an exact value isn't known.

SI units are used. Visit this site to convert temperature, mass and other units and properties.

NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
111HHydrogen1.008251214.120.30.084*
2118HeHelium4.00331224.20.17*
NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
321LiLithium6.9411451245416150.53
422BeBeryllium9.01210521155137501.85
5213BBoron10.818532234942002.46
6214CCarbon12.0117042382051003.51
7215NNitrogen14.007655263.177.41.17*
8216OOxygen15.999606354.490.21.33*
9217FFluorine18.998507153.585.01.58*
10218NeNeon20.180388324.627.10.84*
NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
1131NaSodium22.9901801137111560.97
1232MgMagnesium24.3051502392313801.74
13313AlAluminium26.9201253193327402.70
14314SiSilicon28.08511043168326282.33
15315PPhosphorus30.974100513175501.82
16316SSulfur62.065100643387182.06
17317ClChlorine35.453100721722392.95*
18318ArArgon39.948718384871.66*
NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
1941KPotassium39.0982201233710320.86
2042CaCalcium40.07828024111517571.54
2143ScScandium44.9561601181431032.99
2244TiTitanium47.8671405194135604.51
2345VVanadium50.9421351218336806.09
2446CrChromium51.9961403213029457.14
2547MnManganese54.9381401151722357.44
2648FeIron55.8451403-4180830237.87
2749CoCobalt58.9931351176832008.89
28410NiNickel58.6931355173831868.91
29411CuCopper63.4561352135828408.92
30412ZnZinc65.39135569311807.14
31413GaGallium69.7231303230324775.91
32414GeGermanium72.6412544121130935.32
33415AsArsenic74.922115518895.72
34416SeSelenium78.96115654949584.82
35417BrBromine79.904115722663323.14
36418KrKrypton83.888851161203.48*
NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
3751RbRubidium85.468235113129611.53
3852SrStrontium87.6220024105016552.63
3953YYttrium88.9061801179936094.47
4054ZrZirconium91.2241554213046826.51
4155NbNiob92.9061451275050178.58
4256MoMolybdenum95.9414562896491210.28
4357TcTechnetium981352430515011.49
4458RuRuthenium101.0713072607442312.45
4559RhRhodium102.9113512273396812.41
46510PdPalladium106.4214061828323612.02
47511AgSilver107.8716021234243510.49
48512CdCadmium112.41155≥359410408.64
49513InIndium114.821553143023457.31
50514SnTin118.7114541050528757.29
51515SbAntimony121.761455290418606.69
52516TeTellurium127.614064-572312636.25
53517IIodine126.90140713874574.94
54518XeXenon131.29108891611654.49*
NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
5561CsCaesium132.90260113029441.90
5662BaBarium137.3321527100019133.65
5763LaLanthanum138.911951119337306.16
5863CeCerium140.121853106837166.77
5963PrPraseodym140.911851120437936.48
6063NdNeodym144.241855129733737.00
6163PmPromethium145185131532737.22
6263SmSamarium150.361854134520767.54
6363EuEuropium151.961852109918006.16
6463GdGadolinium157.251806158535237.89
6563TbTerbium158.921751162935038.25
6663DyDysprosium162.51757168028408.56
6763HoHolmium163.931751174729638.78
6863ErErbium167.261756179527839.05
6963TmThulium168.931751181822209.32
7063YbYtterbium173.041757109714676.97
7163LuLutetium174.971751193636689.84
7264HfHafnium178.4915552506487613.31
7365TaTantalum180.9514513290573116.68
7466WTungsten183.8413543695582819.26
7567ReRhenium186.2113513459586921.03
7668OsOsmium190.2313063306528522.61
7769IrIridium192.2213522739470122.65
78610PtPlatinum195.081354-52045410021.45
79611AuGold196.9713511337312919.32
80612HgMercury200.59150723463013.55
81613TlThallium204.3819032577174611.85
82614PbLead207.218043601202311.34
83615BiBismuth208.98160554418379.80
84616PoPolonium209190652712359.20
85617AtAstatine2107575610
86618RnRadon22212082022119.23*
NumberPeriodGroupSymbolNameMassRadiusValence el.Stable isotopesMelting pointBoiling pointDensity
8771FrFrancium2231~300~950
8872RaRadium226215297320105.50
8973AcActinium2271951327347310.07
9073ThThorium232.041802028506111.72
9173PaProtactinium231.041802113430015.37
9273UUranium238.031751406420318.97
9373NpNeptunium237175912417520.48
9473PuPlutonium244175913350919.74
9573AmAmericium2431751449288013.67
9673CmCurium2471613338313.51
9773BkBerkelium247125913.25
9873CfCalifornium2511173174315.1
9973EsEinsteinium2521133
10073FmFermium2571800
10173MdMendelevium2581100
10273NoNobelium2591100
10373LrLawrencium262
10474RfRutherfordium267
10575DbDubnium262
10676SgSeaborgium266
10777BhBohrium264
10878HsHassium277
10979MtMeitnerium268
110710DsDarmstadtium281
111711RgRoentgenium280
112712CpCopernicium277
113713NhNihonium~2873
114714FlFlerovium2894
115715McMoscovium~2885
116716LvLivermorium~2896
117717TsTenessine~2917
118718OgOganesson2948



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