Input interpretation
francium | atomic mass
Result
223 u (unified atomic mass units) (atomic mass number given for longest-lived isotope)
Unit conversions
223 Da (daltons)
0.223 kDa (kilodaltons)
3.7×10^-22 grams
3.7×10^-25 kg (kilograms)
223 chemical atomic mass units (unit officially deprecated)
223 physical atomic mass units (unit officially deprecated)
Comparison as mass of atom
≈ 1.1 × lead-208 atomic mass ( ≈ 208 u )
Corresponding quantities
Relative atomic mass A_r from A_r = m_aN_A/M_u: | 223
Molar mass M from M = m_aN_A: | 223 g/mol (grams per mole)