IN NATURE of Dec. 13, p. 916, Prof. L. Vegard communicates the results of the investigation of crystalline structure of hydrogen sulphide and selenide, which were made by him in the Physical ...

The data booklet has some examples of complex ion-electron equations. As well as ions and electrons, they involve hydrogen ions (H +) and water (H 2 O). For example, consider permanganate ions (a ...