Input interpretation
naturally occurring elements | atomic diameter
Summary
median | 290 pm highest | 520 pm (cesium) lowest | 50 pm (hydrogen) distribution | | (based on 88 values; 1 unavailable)
Entity with missing value
francium
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 145 pm | highest | 260 pm (cesium) | lowest | 25 pm (hydrogen) | distribution | atomic radius (calculated) | median | 165 pm | highest | 298 pm (cesium) | lowest | 31 pm (helium) | distribution | covalent radius | median | 144 pm | highest | 260 pm (francium) | lowest | 28 pm (helium) | distribution | van der Waals radius | median | 180 pm | highest | 275 pm (potassium) | lowest | 120 pm (hydrogen) | distribution |
Units
Distribution plots
(atomic diameter in picometers)
Atomic diameter rankings
1 | hydrogen | 50 pm 2 | helium | 62 pm 3 | neon | 76 pm 4 | fluorine | 100 pm 5 | oxygen | 120 pm 6 | nitrogen | 130 pm 7 | carbon | 140 pm 8 | argon | 140 pm 9 | boron | 170 pm 10 | krypton | 180 pm ⋮ | | 79 | thallium | 380 pm 80 | polonium | 380 pm 81 | lanthanum | 390 pm 82 | actinium | 390 pm 83 | strontium | 400 pm 84 | radium | 430 pm 85 | barium | 430 pm 86 | potassium | 440 pm 87 | rubidium | 470 pm 88 | cesium | 520 pm (based on 88 values; 1 unavailable)
Unit conversions for median atomic diameter 290 pm
0.29 nm (nanometers)
2.9×10^-10 meters
1.14×10^-8 inches
2.9 Å (ångströms)
Comparisons for median atomic diameter 290 pm
≈ 0.3 × carbon nanotube diameter ( ≈ 1 nm )
≈ 0.85 × diameter of a carbon atom ( ≈ 340 pm )
≈ (0.00289 to 3.9) × diameter of a molecule ( 0.74 to 1000 Å )