OCR Text |
Show Classification of Radium. Rurgo and Precht, Revue Sclen-tiflque, Sclen-tiflque, have classified radium by the spectroscope. Tho most intenso lenses ot tho spark-r.poctrum or radium are rigorously analogous to tho strongest lines ot barium and its congeners magnesium, calcium and strontium. They placo the atomic weight of radium ra-dium at 257.8. This high atomic weight furnishes In part the explanation explana-tion of the easo with which Its elements ele-ments split Into electrons to produce radioactivity. |