Calc.  SED & PREDOM / Input data-file format / Names and Numbers

Electric charges of aqueous species are read from the ending of their name, in two possible ways:

  1 blank space between name and charge: Fe 3+, CO3 2−, Na +, Al(OH)3 −
  2 + or − followed by a number: Fe+3, CO3−2, Na+, Al(OH)3−