Input interpretation
period 6 elements | atomic radius
Summary
median | 175 pm highest | 260 pm (cesium) lowest | 120 pm (radon) distribution |
Units
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 175 pm | highest | 260 pm (cesium) | lowest | 130 pm (osmium) | distribution | atomic radius (calculated) | median | 205 pm | highest | 298 pm (cesium) | lowest | 120 pm (radon) | distribution | covalent radius | median | 187 pm | highest | 244 pm (cesium) | lowest | 132 pm (mercury) | distribution | van der Waals radius | median | 175 pm | highest | 202 pm (lead) | lowest | 155 pm (mercury) | distribution |
Units
Distribution plots
(atomic radius in picometers)
Atomic radius rankings
1 | radon | 120 pm 2 | astatine | 127 pm 3 | osmium | 130 pm 4 | gold | 135 pm 5 | platinum | 135 pm 6 | iridium | 135 pm 7 | rhenium | 135 pm 8 | tungsten | 135 pm 9 | tantalum | 145 pm 10 | mercury | 150 pm ⋮ | | 23 | samarium | 185 pm 24 | promethium | 185 pm 25 | neodymium | 185 pm 26 | praseodymium | 185 pm 27 | cerium | 185 pm 28 | polonium | 190 pm 29 | thallium | 190 pm 30 | lanthanum | 195 pm 31 | barium | 215 pm 32 | cesium | 260 pm
Unit conversions for median atomic radius 175 pm
0.175 nm (nanometers)
1.75×10^-10 meters
6.89×10^-9 inches
1.75 Å (ångströms)
Comparisons for median atomic radius 175 pm
≈ 5.6 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 7 × atomic radius of hydrogen ( ≈ 25 pm )