Input interpretation
americium | atomic mass
Result
243 u (unified atomic mass units) (atomic mass number given for longest-lived isotope)
Unit conversions
243 Da (daltons)
0.243 kDa (kilodaltons)
4.04×10^-22 grams
4.04×10^-25 kg (kilograms)
243 chemical atomic mass units (unit officially deprecated)
243 physical atomic mass units (unit officially deprecated)
Comparison as mass of atom
≈ 1.2 × lead-208 atomic mass ( ≈ 208 u )
Corresponding quantities
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 243
Molar mass M from M = m_aN_A: | 243 g/mol (grams per mole)