VAPORIZATION OF COMPOUNDS AND ALLOYS AT HIGH TEMPERATURES PART XIX. MASS SPECTROMETRIC DETERMINATION OF THE DISSOCIATION ENERGY OF THE MOLECULES Sc2, Y2, La2, AND YLa

摘要

The diatomic molecules Sc2, Y2, Lauj and TLa have been identified mass spectrometric ally in the vapors above condensed scandium, yttrium, lanthanum and Y-La alloys respectively. Their dissocia¬tion energies are D*(Sc2) " 25.9 ± 5, l£(Y2) " 37.3 ± 5, D?(La2) " 57.6 ± 5 and rf(YIa) - 47*3 ± 5 kcal/ole.nThis technical documentary report has been reviewed and is approved.