Input interpretation
potassium helium | atomic diameter
Results
potassium | 440 pm (picometers) helium | 62 pm (picometers)
Relative values
| visual | ratios | | comparisons helium | | 0.14 | 1 | 86% smaller potassium | | 1 | 7.1 | 610% larger
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
| potassium | helium atomic radius (empirical) | 220 pm | atomic radius (calculated) | 243 pm | 31 pm covalent radius | 203 pm | 28 pm van der Waals radius | 275 pm | 140 pm
Units
