THE ABSORPTION SPECTRA OF CHROMIUM AND COBALT CHLORIDE

The absorption maxima of the aqueous solutions of CrCl₃ and CoCI₂ have been measured, in or without the presence of the added impurities of KCl or Cl₂ and also in presence of electric and magnetic fields. Judging from the agreement of the values of wave numbers of these maxima with the term differences of the relevant ions, it is concluded that in the aqueous solutions both singly and multiply charged ions exist in equilibrium and this state is disturbed by the presence of the electric and magnetic fields and also by the addition of impurities. The shifts of the position of the bands arising from the different types of changes of environment round the Ions are also recorded.