Radius (calculated)

The atomic radius gives an approximate determination of the spatial size of an element. Calculated values for atomic radii are determined by theoretical assumptions and calculations.

ElementRadius (calculated)
1HHydrogen53 pm
2HeHelium31 pm
3LiLithium167 pm
4BeBeryllium112 pm
5BBoron87 pm
6CCarbon67 pm
7NNitrogen56 pm
8OOxygen48 pm
9FFluorine42 pm
10NeNeon38 pm
11NaSodium190 pm
12MgMagnesium145 pm
13AlAluminum118 pm
14SiSilicon111 pm
15PPhosphorus98 pm
16SSulfur88 pm
17ClChlorine79 pm
18ArArgon71 pm
19KPotassium243 pm
20CaCalcium194 pm
21ScScandium184 pm
22TiTitanium176 pm
23VVanadium171 pm
24CrChromium166 pm
25MnManganese161 pm
26FeIron156 pm
27CoCobalt152 pm
28NiNickel149 pm
29CuCopper145 pm
30ZnZinc142 pm
31GaGallium136 pm
32GeGermanium125 pm
33AsArsenic114 pm
34SeSelenium103 pm
35BrBromine94 pm
36KrKrypton88 pm
37RbRubidium265 pm
38SrStrontium219 pm
39YYttrium212 pm
40ZrZirconium206 pm
41NbNiobium198 pm
42MoMolybdenum190 pm
43TcTechnetium183 pm
44RuRuthenium178 pm
45RhRhodium173 pm
46PdPalladium169 pm
47AgSilver165 pm
48CdCadmium161 pm
49InIndium156 pm
50SnTin145 pm
51SbAntimony133 pm
52TeTellurium123 pm
53IIodine115 pm
54XeXenon108 pm
55CsCaesium298 pm
56BaBarium253 pm
59PrPraseodymium247 pm
60NdNeodymium206 pm
61PmPromethium205 pm
62SmSamarium238 pm
63EuEuropium231 pm
64GdGadolinium233 pm
65TbTerbium225 pm
66DyDysprosium228 pm
67HoHolmium226 pm
68ErErbium226 pm
69TmThulium222 pm
70YbYtterbium222 pm
71LuLutetium217 pm
72HfHafnium208 pm
73TaTantalum200 pm
74WTungsten193 pm
75ReRhenium188 pm
76OsOsmium185 pm
77IrIridium180 pm
78PtPlatinum177 pm
79AuGold174 pm
80HgMercury171 pm
81TlThallium156 pm
82PbLead154 pm
83BiBismuth143 pm
84PoPolonium135 pm
85AtAstatine127 pm
86RnRadon120 pm