Input interpretation
period 4 elements | atomic diameter
Summary
median | 270 pm highest | 440 pm (potassium) lowest | 180 pm (krypton) distribution |
Units
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 135 pm | highest | 220 pm (potassium) | lowest | 115 pm (3 elements) | distribution | atomic radius (calculated) | median | 150 pm | highest | 243 pm (potassium) | lowest | 88 pm (krypton) | distribution | covalent radius | median | 129 pm | highest | 203 pm (potassium) | lowest | 116 pm (krypton) | distribution | van der Waals radius | median | 185 pm | highest | 275 pm (potassium) | lowest | 139 pm (zinc) | distribution |
Units
Distribution plots
(atomic diameter in picometers)
Atomic diameter rankings
1 | krypton | 180 pm 2 | bromine | 230 pm 3 | selenium | 230 pm 4 | arsenic | 230 pm 5 | germanium | 250 pm 6 | gallium | 260 pm 7 | zinc | 270 pm 8 | copper | 270 pm 9 | cobalt | 270 pm 10 | nickel | 270 pm 11 | vanadium | 270 pm 12 | iron | 280 pm 13 | manganese | 280 pm 14 | chromium | 280 pm 15 | titanium | 280 pm 16 | scandium | 320 pm 17 | calcium | 360 pm 18 | potassium | 440 pm
Unit conversions for median atomic diameter 270 pm
0.27 nm (nanometers)
2.7×10^-10 meters
1.06×10^-8 inches
2.7 Å (ångströms)
Comparisons for median atomic diameter 270 pm
≈ ( 0.3 ≈ 1/4 ) × carbon nanotube diameter ( ≈ 1 nm )
≈ 0.79 × diameter of a carbon atom ( ≈ 340 pm )
≈ (0.00269 to 3.6) × diameter of a molecule ( 0.74 to 1000 Å )