Jevons

It should, however, be mentioned that Mulliken s study of the BO system has been followed over the years by many others, An extensive study by Jenkins and McKellar (1932) should be mentioned explicitly. This study involved the long wavelength band of BO. The same method as that used by both Jevons and Mulliken to produce the BO was used in this work. The new (present day) quantum mechanics was used in the theoretical interpretation. Both the vibrational and the rotational isotope effects were observed and agree with theory. One motivation for this work was to determine how well the isotopic ratio of the square roots of the two relevant isotopic masses (10B and nB) agrees with the ratio obtained from Aston s mass spectrometric measurements and hence how well isotopic mass ratios determined from band spectra compare with those obtained using Aston s mass spectrograph. 

Jevons, W. Spectroscopic investigations in connection with the active modification of nitrogen IV - a band spectrum of boron nitride. Proc. Roy. Soc. Lond 91A, 120-134 (1915). 

When any apparently exceptional or new substance is encountered, the chemist is guided in his treatment of it by analogies which it seems to present with previously known substances.—W. S. Jevons,... 

He2 (g). The values for the energy states and the energy of dissociation of gaseous diatomic helium are from Weizel,1,2> > 5i Weizel and Pestel,1 Weizel and Fiichtbauer,1 Imanishi,1, 2 Curtis,1 Curtis and Harvey,1 and Mulliken.6 See also Jevons.1... 

The values for the energy states of gaseous diatomic hydrogen are from Richardson3-4> 5 and Richardson and Das.1,2 See also Sandeman,1 Dieke and Hopfield,1 Hori,3 Schaafsma and Dieke,1 Richardson and Davidson,1 2> 3 5 Finkelnburg and Mecke,1,2 Mulliken,6 Jevons,1 and Burrau.1... 

F2 (g). The energy states of the F2 molecule are evaluated from the data of Gale and Monk1 and Gale.1 See Jevons.1... 

N2 (g). The standard state is taken as the equilibrium gas at 18°. The values for the energy states of gaseous diatomic nitrogen are from Sponer,1-3 Birge and Hopfield,1 4 and Mulliken.3 6 See also Jevons.1 Data on the energy of ionization of N2 (g) were reported by Sponer,3 Smyth,3 Turner and Samson,1 and Tate, Smith, and Vaughan,1 the value of the last named being 15.65 = = 0.02 volt-electrons. 

The values of the energy states of the NO molecule are from Mulliken.8 See also Jevons.1... 

The values for the energy states of gaseous LiH are from Mulliken. See also Watson,2 Nakamura,1 and Jevons.1... 

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