Input interpretation
lanthanides | covalent radius
Summary
median | 196 pm highest | 207 pm (lanthanum) lowest | 187 pm (ytterbium and lutetium) distribution |
Units
Plot
Plot
Periodic table location
Periodic table location
Atomic radii properties
atomic radius (empirical) | median | 180 pm | highest | 195 pm (lanthanum) | lowest | 175 pm (7 elements) | distribution | atomic radius (calculated) | median | 226 pm | highest | 247 pm (praseodymium) | lowest | 205 pm (promethium) | distribution | covalent radius | median | 196 pm | highest | 207 pm (lanthanum) | lowest | 187 pm (ytterbium and lutetium) | distribution |
Units
Distribution plots
(covalent radius in picometers)
Covalent radius rankings
1 | lutetium | 187 pm 2 | ytterbium | 187 pm 3 | erbium | 189 pm 4 | thulium | 190 pm 5 | holmium | 192 pm 6 | dysprosium | 192 pm 7 | terbium | 194 pm 8 | gadolinium | 196 pm 9 | europium | 198 pm 10 | samarium | 198 pm 11 | promethium | 199 pm 12 | neodymium | 201 pm 13 | praseodymium | 203 pm 14 | cerium | 204 pm 15 | lanthanum | 207 pm
Unit conversions for median covalent radius 196 pm
0.196 nm (nanometers)
1.96×10^-10 meters
7.72×10^-9 inches
1.96 Å (ångströms)
Comparisons for median covalent radius 196 pm
≈ 6.3 × atomic radius of helium (the smallest atom) ( ≈ 31 pm )
≈ 7.8 × atomic radius of hydrogen ( ≈ 25 pm )