Input interpretation
solid elements (at STP) | atomic radius
Summary
median | 155 pm highest | 260 pm (cesium) lowest | 70 pm (carbon) distribution | | (based on 81 values; 5 unavailable)
Entities with missing values
francium | curium | berkelium | californium | einsteinium (total: 5)
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 155 pm | highest | 260 pm (cesium) | lowest | 70 pm (carbon) | distribution | atomic radius (calculated) | median | 174 pm | highest | 298 pm (cesium) | lowest | 67 pm (carbon) | distribution | covalent radius | median | 153 pm | highest | 260 pm (francium) | lowest | 76 pm (carbon) | distribution | van der Waals radius | median | 184 pm | highest | 275 pm (potassium) | lowest | 139 pm (zinc) | distribution |
Units
Distribution plots
(atomic radius in picometers)
Atomic radius rankings
1 | carbon | 70 pm 2 | boron | 85 pm 3 | sulfur | 100 pm 4 | phosphorus | 100 pm 5 | beryllium | 105 pm 6 | silicon | 110 pm 7 | selenium | 115 pm 8 | arsenic | 115 pm 9 | germanium | 125 pm 10 | aluminum | 125 pm ⋮ | | 72 | polonium | 190 pm 73 | thallium | 190 pm 74 | actinium | 195 pm 75 | lanthanum | 195 pm 76 | strontium | 200 pm 77 | radium | 215 pm 78 | barium | 215 pm 79 | potassium | 220 pm 80 | rubidium | 235 pm 81 | cesium | 260 pm (based on 81 values; 5 unavailable)
Unit conversions for median atomic radius 155 pm
0.155 nm (nanometers)
1.55×10^-10 meters
6.1×10^-9 inches
1.55 Å (ångströms)
Comparisons for median atomic radius 155 pm
≈ 5 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 6.2 × atomic radius of hydrogen ( ≈ 25 pm )