The observed wavelengths for some 200 lines are given with their energy-level classifications. The wavelength measurements extend from 89 to 31780 . Based upon the assessment of published experimental data, recommended values of various cross sections and rate coefficients are generated in graphical and tabular form. Areas where additional data are needed are identified, such as the measurement of the cross sections for momentum transfer and electron impact dissociation of CCl 2 F 2 into neutral species. An annotation of potassium has been changed in the Table of Standard Atomic Weights.
Many elements have a different isotopic composition in some nonterrestrial materials.
Some recent data on oxygen are included in this article for the information of the interested scientific community. Potassium, Rubidium, and Cesium Hydroxides , p.1031 L. V. Gurvich, G. A. Bergman, L. N. Gorokov, V. S. Iorish, V. Ya. The data on thermodynamic and molecular properties of the potassium, rubidium, and cesium hydroxides have been collected, critically reviewed, analyzed, and evaluated. Tables of thermal functions of these hydroxides in the condensed and gasious states have been calculated using the results of the analysis and some estimated values. The recommendations are compared with earlier evaluations.