Input interpretation
s-block elements | nuclear radius
Summary
median | 1.905 fm highest | 3.202 fm (potassium) lowest | 1.2 fm (hydrogen) distribution | | (based on 7 values; 7 unavailable)
Entities with missing values
calcium | rubidium | strontium | cesium | barium | francium | radium (total: 7)
Nuclear radius rankings
1 | hydrogen | 1.2 fm 2 | helium | 1.512 fm 3 | lithium | 1.731 fm 4 | beryllium | 1.905 fm 5 | sodium | 2.669 fm 6 | magnesium | 2.747 fm 7 | potassium | 3.202 fm (based on 7 values; 7 unavailable)
Unit conversions for median nuclear radius 1.905 fm
1.905×10^-15 meters
7.5×10^-14 inches
Comparisons for median nuclear radius 1.905 fm
≈ 0.68 × classical electron radius ( ≈ 2.8×10^-15 m )
≈ 2.3 × proton root-mean-square charge radius ( ≈ 8.4×10^-16 m )