Atomic Radius - Calculated Atomic Radii

Calculated Atomic Radii

The following table shows atomic radii computed from theoretical models, as published by Enrico Clementi and others in 1967. The values are in picometres (pm).

Group (vertical) 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18
Period (horizontal)
1 H
53		 He
31
2 Li
167		 Be
112		 B
87		 C
67		 N
56		 O
48		 F
42		 Ne
38
3 Na
190		 Mg
145		 Al
118		 Si
111		 P
98		 S
88		 Cl
79		 Ar
71
4 K
243		 Ca
194		 Sc
184		 Ti
176		 V
171		 Cr
166		 Mn
161		 Fe
156		 Co
152		 Ni
149		 Cu
145		 Zn
142		 Ga
136		 Ge
125		 As
114		 Se
103		 Br
94		 Kr
88
5 Rb
265		 Sr
219		 Y
212		 Zr
206		 Nb
198		 Mo
190		 Tc
183		 Ru
178		 Rh
173		 Pd
169		 Ag
165		 Cd
161		 In
156		 Sn
145		 Sb
133		 Te
123		 I
115		 Xe
108
6 Cs
298		 Ba
253		 *
 Hf
208		 Ta
200		 W
193		 Re
188		 Os
185		 Ir
180		 Pt
177		 Au
174		 Hg
171		 Tl
156		 Pb
154		 Bi
143		 Po
135		 At
 Rn
120
7 Fr
 Ra
 **
 Rf
 Db
 Sg
 Bh
 Hs
 Mt
 Ds
 Rg
 Cn
 Uut
 Fl
 Uup
 Lv
 Uus
 Uuo
Lanthanides *
 La
 Ce
 Pr
247		 Nd
206		 Pm
205		 Sm
238		 Eu
231		 Gd
233		 Tb
225		 Dy
228		 Ho
 Er
226		 Tm
222		 Yb
222		 Lu
217
Actinides **
 Ac
 Th
 Pa
 U
 Np
 Pu
 Am
 Cm
 Bk
 Cf
 Es
 Fm
 Md
 No
 Lr

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