Input interpretation
plutonium americium | atomic mass
Results
plutonium | 244 u (unified atomic mass units) americium | 243 u (unified atomic mass units) (atomic mass number given for longest-lived isotope)
Relative values
| visual | ratios | | comparisons americium | | 1 | 1 | 0.4% smaller plutonium | | 1 | 1 | 0.4% larger