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==Calculated atomic radius==
==Empirically measured atomic radius==


[[Atomic radii of the elements (data page)|Calculated atomic radius]] in [[picometre]]s (pm)
[[Atomic radii of the elements (data page)|Empirically measured atomic radius]]
in [[picometre]]s (pm) to an accuracy of about 5 pm


<center>
<center>
Line 30: Line 31:
|- align="CENTER"
|- align="CENTER"
| [[Period 1 element|'''1''']]
| [[Period 1 element|'''1''']]
| bgcolor="#ff3500" | [[Hydrogen|H]]<br/>53
| bgcolor="#ff1900" | [[Hydrogen|H]]<br/>75
| colspan=16 |
| colspan=16 |
| bgcolor="#ff1f00" | [[Helium|He]]<br/>31
| bgcolor="#bbbbbb" | [[Helium|He]]<br/>&nbsp;
|- align="CENTER"
|- align="CENTER"
| [[Period 2 element|'''2''']]
| [[Period 2 element|'''2''']]
| bgcolor="#ffa700" | [[Lithium|Li]]<br/>167
| bgcolor="#ff9100" | [[Lithium|Li]]<br/>145
| bgcolor="#ff7000" | [[Beryllium|Be]]<br/>112
| bgcolor="#ff6900" | [[Beryllium|Be]]<br/>105
| colspan=10 |
| colspan=10 |
| bgcolor="#ff5700" | [[Boron|B]]<br/>87
| bgcolor="#ff5500" | [[Boron|B]]<br/>85
| bgcolor="#ff4300" | [[Carbon|C]]<br/>67
| bgcolor="#ff4600" | [[Carbon|C]]<br/>70
| bgcolor="#ff3800" | [[Nitrogen|N]]<br/>56
| bgcolor="#ff4100" | [[Nitrogen|N]]<br/>65
| bgcolor="#ff3000" | [[Oxygen|O]]<br/>48
| bgcolor="#ff3c00" | [[Oxygen|O]]<br/>60
| bgcolor="#ff2a00" | [[Fluorine|F]]<br/>42
| bgcolor="#ff3200" | [[Fluorine|F]]<br/>50
| bgcolor="#ff2600" | [[Neon|Ne]]<br/>38
| bgcolor="#bbbbbb" | [[Neon|Ne]]<br/>&nbsp;
|- align="CENTER"
|- align="CENTER"
| [[Period 3 element|'''3''']]
| [[Period 3 element|'''3''']]
| bgcolor="#ffbe00" | [[Sodium|Na]]<br/>190
| bgcolor="#ffb400" | [[Sodium|Na]]<br/>180
| bgcolor="#ff9100" | [[Magnesium|Mg]]<br/>145
| bgcolor="#ff9600" | [[Magnesium|Mg]]<br/>150
| colspan=10 |
| colspan=10 |
| bgcolor="#ff7600" | [[Aluminium|Al]]<br/>118
| bgcolor="#ff7d00" | [[Aluminium|Al]]<br/>125
| bgcolor="#ff6f00" | [[Silicon|Si]]<br/>111
| bgcolor="#ff6e00" | [[Silicon|Si]]<br/>110
| bgcolor="#ff6200" | [[Phosphorus|P]]<br/>98
| bgcolor="#ff6400" | [[Phosphorus|P]]<br/>100
| bgcolor="#ff5800" | [[Sulfur|S]]<br/>88
| bgcolor="#ff6400" | [[Sulfur|S]]<br/>100
| bgcolor="#ff4f00" | [[Chlorine|Cl]]<br/>79
| bgcolor="#ff6400" | [[Chlorine|Cl]]<br/>100
| bgcolor="#ff4700" | [[Argon|Ar]]<br/>71
| bgcolor="#ff4700" | [[Argon|Ar]]<br/>71
|- align="CENTER"
|- align="CENTER"
| [[Period 4 element|'''4''']]
| [[Period 4 element|'''4''']]
| bgcolor="#fff300" | [[Potassium|K]]<br/>243
| bgcolor="#ffdc00" | [[Potassium|K]]<br/>220
| bgcolor="#ffc200" | [[Calcium|Ca]]<br/>194
| bgcolor="#ffb400" | [[Calcium|Ca]]<br/>180
| bgcolor="#ffb800" | [[Scandium|Sc]]<br/>184
| bgcolor="#ffa000" | [[Scandium|Sc]]<br/>160
| bgcolor="#ffb000" | [[Titanium|Ti]]<br/>176
| bgcolor="#ff8c00" | [[Titanium|Ti]]<br/>140
| bgcolor="#ffab00" | [[Vanadium|V]]<br/>171
| bgcolor="#ff8700" | [[Vanadium|V]]<br/>135
| bgcolor="#ffa600" | [[Chromium|Cr]]<br/>166
| bgcolor="#ff8c00" | [[Chromium|Cr]]<br/>140
| bgcolor="#ffa100" | [[Manganese|Mn]]<br/>161
| bgcolor="#ff8c00" | [[Manganese|Mn]]<br/>140
| bgcolor="#ff9c00" | [[Iron|Fe]]<br/>156
| bgcolor="#ff8c00" | [[Iron|Fe]]<br/>140
| bgcolor="#ff9800" | [[Cobalt|Co]]<br/>152
| bgcolor="#ff8700" | [[Cobalt|Co]]<br/>135
| bgcolor="#ff9500" | [[Nickel|Ni]]<br/>149
| bgcolor="#ff8700" | [[Nickel|Ni]]<br/>135
| bgcolor="#ff9100" | [[Copper|Cu]]<br/>145
| bgcolor="#ff8700" | [[Copper|Cu]]<br/>135
| bgcolor="#ff8e00" | [[Zinc|Zn]]<br/>142
| bgcolor="#ff8700" | [[Zinc|Zn]]<br/>135
| bgcolor="#ff8800" | [[Gallium|Ga]]<br/>136
| bgcolor="#ff8700" | [[Gallium|Ga]]<br/>130
| bgcolor="#ff7d00" | [[Germanium|Ge]]<br/>125
| bgcolor="#ff7d00" | [[Germanium|Ge]]<br/>125
| bgcolor="#ff7200" | [[Arsenic|As]]<br/>114
| bgcolor="#ff7300" | [[Arsenic|As]]<br/>115
| bgcolor="#ff6700" | [[Selenium|Se]]<br/>103
| bgcolor="#ff7300" | [[Selenium|Se]]<br/>115
| bgcolor="#ff5e00" | [[Bromine|Br]]<br/>94
| bgcolor="#ff7300" | [[Bromine|Br]]<br/>115
| bgcolor="#ff5800" | [[Krypton|Kr]]<br/>88
| bgcolor="#bbbbbb" | [[Krypton|Kr]]<br/>&nbsp;
|- align="CENTER"
|- align="CENTER"
| [[Period 5 element|'''5''']]
| [[Period 5 element|'''5''']]
| bgcolor="#ffff00" | [[Rubidium|Rb]]<br/>265
| bgcolor="#ffeb00" | [[Rubidium|Rb]]<br/>235
| bgcolor="#ffdb00" | [[Strontium|Sr]]<br/>219
| bgcolor="#ffc800" | [[Strontium|Sr]]<br/>200
| bgcolor="#ffd400" | [[Yttrium|Y]]<br/>212
| bgcolor="#ffb400" | [[Yttrium|Y]]<br/>180
| bgcolor="#ffce00" | [[Zirconium|Zr]]<br/>206
| bgcolor="#ff9b00" | [[Zirconium|Zr]]<br/>155
| bgcolor="#ffc600" | [[Niobium|Nb]]<br/>198
| bgcolor="#ff9100" | [[Niobium|Nb]]<br/>145
| bgcolor="#ffbe00" | [[Molybdenum|Mo]]<br/>190
| bgcolor="#ff9100" | [[Molybdenum|Mo]]<br/>145
| bgcolor="#ffb700" | [[Technetium|Tc]]<br/>183
| bgcolor="#ff8700" | [[Technetium|Tc]]<br/>135
| bgcolor="#ffb600" | [[Ruthenium|Ru]]<br/>178
| bgcolor="#ff8200" | [[Ruthenium|Ru]]<br/>130
| bgcolor="#ffac00" | [[Rhodium|Rh]]<br/>173
| bgcolor="#ff8700" | [[Rhodium|Rh]]<br/>135
| bgcolor="#ff8900" | [[Palladium|Pd]]<br/>169
| bgcolor="#ff8c00" | [[Palladium|Pd]]<br/>140
| bgcolor="#ffa500" | [[Silver|Ag]]<br/>165
| bgcolor="#ffa000" | [[Silver|Ag]]<br/>160
| bgcolor="#ffa100" | [[Cadmium|Cd]]<br/>161
| bgcolor="#ff9b00" | [[Cadmium|Cd]]<br/>155
| bgcolor="#ff9c00" | [[Indium|In]]<br/>156
| bgcolor="#ff9b00" | [[Indium|In]]<br/>155
| bgcolor="#ff9100" | [[Tin|Sn]]<br/>145
| bgcolor="#ff9100" | [[Tin|Sn]]<br/>145
| bgcolor="#ff8500" | [[Antimony|Sb]]<br/>133
| bgcolor="#ff9100" | [[Antimony|Sb]]<br/>145
| bgcolor="#ff7b00" | [[Tellurium|Te]]<br/>123
| bgcolor="#ff8c00" | [[Tellurium|Te]]<br/>140
| bgcolor="#ff7300" | [[Iodine|I]]<br/>115
| bgcolor="#ff8c00" | [[Iodine|I]]<br/>140
| bgcolor="#ff6c00" | [[Xenon|Xe]]<br/>108
| bgcolor="#bbbbbb" | [[Xenon|Xe]]<br/>&nbsp;
|- align="CENTER"
|- align="CENTER"
| [[Period 6 element|'''6''']]
| [[Period 6 element|'''6''']]
| bgcolor="#ffff00" | [[Caesium|Cs]]<br/>298
| bgcolor="#ffff00" | [[Caesium|Cs]]<br/>260
| bgcolor="#fffd00" | [[Barium|Ba]]<br/>253
| bgcolor="#ffd700" | [[Barium|Ba]]<br/>215
| *<br/>&nbsp;
| *<br/>&nbsp;
| bgcolor="#ffd000" | [[Hafnium|Hf]]<br/>208
| bgcolor="#ff9b00" | [[Hafnium|Hf]]<br/>155
| bgcolor="#ffc800" | [[Tantalum|Ta]]<br/>200
| bgcolor="#ff9100" | [[Tantalum|Ta]]<br/>145
| bgcolor="#ffc100" | [[Tungsten|W]]<br/>193
| bgcolor="#ff8700" | [[Tungsten|W]]<br/>135
| bgcolor="#ffbc00" | [[Rhenium|Re]]<br/>188
| bgcolor="#ff8700" | [[Rhenium|Re]]<br/>135
| bgcolor="#ffb900" | [[Osmium|Os]]<br/>185
| bgcolor="#ff8200" | [[Osmium|Os]]<br/>130
| bgcolor="#ffb400" | [[Iridium|Ir]]<br/>180
| bgcolor="#ff8700" | [[Iridium|Ir]]<br/>135
| bgcolor="#ffb100" | [[Platinum|Pt]]<br/>177
| bgcolor="#ff8700" | [[Platinum|Pt]]<br/>135
| bgcolor="#ffae00" | [[Gold|Au]]<br/>174
| bgcolor="#ff8700" | [[Gold|Au]]<br/>135
| bgcolor="#ffab00" | [[Mercury (element)|Hg]]<br/>171
| bgcolor="#ff9600" | [[Mercury (element)|Hg]]<br/>150
| bgcolor="#ff9c00" | [[Thallium|Tl]]<br/>156
| bgcolor="#ffbe00" | [[Thallium|Tl]]<br/>190
| bgcolor="#ff9a00" | [[Lead|Pb]]<br/>154
| bgcolor="#ffb400" | [[Lead|Pb]]<br/>180
| bgcolor="#ff8f00" | [[Bismuth|Bi]]<br/>143
| bgcolor="#ffa000" | [[Bismuth|Bi]]<br/>160
| bgcolor="#ff8700" | [[Polonium|Po]]<br/>135
| bgcolor="#ffbe00" | [[Polonium|Po]]<br/>190
| bgcolor="#bbbbbb" | [[Astatine|At]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Astatine|At]]<br/>&nbsp;
| bgcolor="#ff7800" | [[Radon|Rn]]<br/>120
| bgcolor="#bbbbbb" | [[Radon|Rn]]<br/>&nbsp;
|- align=CENTER
|- align=CENTER
| [[Period 7 element|'''7''']]
| [[Period 7 element|'''7''']]
| bgcolor="#bbbbbb" | [[Francium|Fr]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Francium|Fr]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Radium|Ra]]<br/>&nbsp;
| bgcolor="#ffd700" | [[Radium|Ra]]<br/>215
| **<br/>&nbsp;
| **<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Rutherfordium|Rf]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Rutherfordium|Rf]]<br/>&nbsp;
Line 140: Line 141:
| [[Lanthanides]]
| [[Lanthanides]]
| *<br/>&nbsp;
| *<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Lanthanum|La]]<br/>&nbsp;
| bgcolor="#ffc300" | [[Lanthanum|La]]<br/>195
| bgcolor="#bbbbbb" | [[Cerium|Ce]]<br/>&nbsp;
| bgcolor="#ffb900" | [[Cerium|Ce]]<br/>185
| bgcolor="#fff700" | [[Praseodymium|Pr]]<br/>247
| bgcolor="#ffb900" | [[Praseodymium|Pr]]<br/>185
| bgcolor="#ffce00" | [[Neodymium|Nd]]<br/>206
| bgcolor="#ffb900" | [[Neodymium|Nd]]<br/>185
| bgcolor="#ffcd00" | [[Promethium|Pm]]<br/>205
| bgcolor="#ffb900" | [[Promethium|Pm]]<br/>185
| bgcolor="#ffee00" | [[Samarium|Sm]]<br/>238
| bgcolor="#ffb900" | [[Samarium|Sm]]<br/>185
| bgcolor="#ffe700" | [[Europium|Eu]]<br/>231
| bgcolor="#ffb900" | [[Europium|Eu]]<br/>185
| bgcolor="#ffe900" | [[Gadolinium|Gd]]<br/>233
| bgcolor="#ffb400" | [[Gadolinium|Gd]]<br/>180
| bgcolor="#ffe100" | [[Terbium|Tb]]<br/>225
| bgcolor="#ffaf00" | [[Terbium|Tb]]<br/>175
| bgcolor="#ffe400" | [[Dysprosium|Dy]]<br/>228
| bgcolor="#ffaf00" | [[Dysprosium|Dy]]<br/>175
| bgcolor="#bbbbbb" | [[Holmium|Ho]]<br/>&nbsp;
| bgcolor="#ffaf00" | [[Holmium|Ho]]<br/>175
| bgcolor="#ffe200" | [[Erbium|Er]]<br/>226
| bgcolor="#ffaf00" | [[Erbium|Er]]<br/>175
| bgcolor="#ffde00" | [[Thulium|Tm]]<br/>222
| bgcolor="#ffaf00" | [[Thulium|Tm]]<br/>175
| bgcolor="#ffde00" | [[Ytterbium|Yb]]<br/>222
| bgcolor="#ffaf00" | [[Ytterbium|Yb]]<br/>175
| bgcolor="#ffd900" | [[Lutetium|Lu]]<br/>217
| bgcolor="#ffaf00" | [[Lutetium|Lu]]<br/>175
|- align=CENTER
|- align=CENTER
| [[Actinides]]
| [[Actinides]]
| **<br/>&nbsp;
| **<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Actinium|Ac]]<br/>&nbsp;
| bgcolor="#ffc300" | [[Actinium|Ac]]<br/>195
| bgcolor="#bbbbbb" | [[Thorium|Th]]<br/>&nbsp;
| bgcolor="#ffb400" | [[Thorium|Th]]<br/>180
| bgcolor="#bbbbbb" | [[Protactinium|Pa]]<br/>&nbsp;
| bgcolor="#ffb400" | [[Protactinium|Pa]]<br/>180
| bgcolor="#bbbbbb" | [[Uranium|U]]<br/>&nbsp;
| bgcolor="#ffaf00" | [[Uranium|U]]<br/>175
| bgcolor="#bbbbbb" | [[Neptunium|Np]]<br/>&nbsp;
| bgcolor="#ffaf00" | [[Neptunium|Np]]<br/>175
| bgcolor="#bbbbbb" | [[Plutonium|Pu]]<br/>&nbsp;
| bgcolor="#ffaf00" | [[Plutonium|Pu]]<br/>175
| bgcolor="#bbbbbb" | [[Americium|Am]]<br/>&nbsp;
| bgcolor="#ffaf00" | [[Americium|Am]]<br/>175
| bgcolor="#bbbbbb" | [[Curium|Cm]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Curium|Cm]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Berkelium|Bk]]<br/>&nbsp;
| bgcolor="#bbbbbb" | [[Berkelium|Bk]]<br/>&nbsp;
Line 176: Line 177:
| colspan=20 |
| colspan=20 |
|}</center>
|}</center>
<center>[[Periodic table]] of [[Atomic radii of the elements (data page)|calculated atomic radius]]
<center>[[Periodic table]] of [[Atomic radii of the elements (data page)|empirically measured atomic radius]]
in [[picometre]]s (pm)</center>
in [[picometre]]s (pm) to an accuracy of about 5 pm</center>


<center>See also [[Periodic table]]</center>
<center>See also [[Periodic table]]</center>


'''Reference:''' E. Clementi, D.L.Raimondi, and W.P. Reinhardt, ''J. Chem. Phys.'' 1967, '''47''', 1300.
'''Reference:''' J.C. Slater, ''J. Chem. Phys.'' 1964, '''41''', 3199.

Revision as of 02:01, 24 January 2008

Empirically measured atomic radius

Empirically measured atomic radius in picometres (pm) to an accuracy of about 5 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
75 		He
 
2 Li
145 		Be
105 		B
85 		C
70 		N
65 		O
60 		F
50 		Ne
 
3 Na
180 		Mg
150 		Al
125 		Si
110 		P
100 		S
100 		Cl
100 		Ar
71
4 K
220 		Ca
180 		Sc
160 		Ti
140 		V
135 		Cr
140 		Mn
140 		Fe
140 		Co
135 		Ni
135 		Cu
135 		Zn
135 		Ga
130 		Ge
125 		As
115 		Se
115 		Br
115 		Kr
 
5 Rb
235 		Sr
200 		Y
180 		Zr
155 		Nb
145 		Mo
145 		Tc
135 		Ru
130 		Rh
135 		Pd
140 		Ag
160 		Cd
155 		In
155 		Sn
145 		Sb
145 		Te
140 		I
140 		Xe
 
6 Cs
260 		Ba
215 		*
  		Hf
155 		Ta
145 		W
135 		Re
135 		Os
130 		Ir
135 		Pt
135 		Au
135 		Hg
150 		Tl
190 		Pb
180 		Bi
160 		Po
190 		At
  		Rn
 
7 Fr
  		Ra
215 		**
  		Rf
  		Db
  		Sg
  		Bh
  		Hs
  		Mt
  		Ds
  		Rg
  		Uub
  		Uut
  		Uuq
  		Uup
  		Uuh
  		Uus
  		Uuo
 
Lanthanides *
  		La
195 		Ce
185 		Pr
185 		Nd
185 		Pm
185 		Sm
185 		Eu
185 		Gd
180 		Tb
175 		Dy
175 		Ho
175 		Er
175 		Tm
175 		Yb
175 		Lu
175
Actinides **
  		Ac
195 		Th
180 		Pa
180 		U
175 		Np
175 		Pu
175 		Am
175 		Cm
  		Bk
  		Cf
  		Es
  		Fm
  		Md
  		No
  		Lr
 
Periodic table of empirically measured atomic radius in picometres (pm) to an accuracy of about 5 pm
See also Periodic table

Reference: J.C. Slater, J. Chem. Phys. 1964, 41, 3199.

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