Input interpretation
protactinium | atomic mass
Result
231.03588 u (unified atomic mass units) (atomic mass number given for longest-lived isotope)
Unit conversions
231.03588 Da (daltons)
0.23103588 kDa (kilodaltons)
3.836441×10^-22 grams
3.836441×10^-25 kg (kilograms)
231.0458 chemical atomic mass units (unit officially deprecated)
231.10933 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: | 231
Molar mass M from M = m_aN_A: | 231 g/mol (grams per mole)