Proceedings of the Royal Society of London. Series A, Containing papers of a mathematical and physical character, 1908-05, Vol.80 (539), p.298-309
1908
Details
- Autor(en) / Beteiligte
- Titel
- Bakerian lecture for 1907.—On the atomic weight of radium
- Ist Teil von
- Proceedings of the Royal Society of London. Series A, Containing papers of a mathematical and physical character, 1908-05, Vol.80 (539), p.298-309
- Ort / Verlag
- London: The Royal Society
- Erscheinungsjahr
- 1908
- Link zum Volltext
- Quelle
- Alma/SFX Local Collection
- Beschreibungen/Notizen
- Although there has been a considerable amount of discussion, based upon spectroscopic considerations and on its supposed mode of genesis, respecting the place of radium in the system of the elements, and inferentially, therefore, concerning its atomic weight, we are indebted for the only direct experimental determinations of this value hitherto made known to the discoverer of the element, Mme. Curie. Her first observations, published in 1902, were made on about 90 milligrammes of the chloride, and furnished the value 225 as the mean of three fairly concordant experiments. In the autumn of last year Mme. Curie communicated to the French Academy the results of a second series of estimations. These were made upon much larger quantities of the carefully purified chloride (about 4 decigrammes) and afforded the value 226·2 as the mean of three closely concordant determinations (Ag = 107·8, Cl=35·4).