Input interpretation
period 4 elements | nuclear radius
Nuclear radius rankings
1 | potassium | 3.202 fm (based on 1 values; 17 unavailable)
Unit conversions for median nuclear radius 3.202 fm
3.202×10^-15 meters
1.261×10^-13 inches
Comparisons for median nuclear radius 3.202 fm
≈ 1.1 × classical electron radius ( ≈ 2.8×10^-15 m )
≈ 3.8 × proton root-mean-square charge radius ( ≈ 8.4×10^-16 m )