Abegg, Richard

Abegg, Richard. "Die Valenz und das periodische System. Versuch einer Theorie der Molekular-Verbindungen." Zeitschrift fur anorgartische Chemie 39 (1904) 330380. 

The first ionic bonding model was suggested by the German chemist Richard Abegg (1869-1910) shortly after the British physicist Joseph John Thomson (1856-1940) discovered the electron. Abegg was smdy ing the inert gases and noticed that their electron... 

During this final year of university studies, Haber met a fellow student named Richard Abegg, the free-spirited scion of a wealthy Berlin banker. The two became friends. 

Fritz Haber had one extremely valuable link to his field s ruling clique Richard Abegg, his onetime Berlin classmate, the friend who d first introduced him to physical chemistry. Abegg had moved from Ostwald s laboratory to the University of Gottingen, where he worked as an assistant to another former Ost-wald student, Walther Nernst. In 1899, Abegg took a job teaching at the university in Haber s old hometown of Breslau. 

In Breslau, Richard Abegg also became Fritz Haber s link to a person who belonged to his past and his future. She was a young woman, the first woman ever to acquire a doctorate from Breslau s university. Richard Abegg was her academic adviser. Her name was Clara Immerwahr. 

In 1899, fate brought Fritz Haber s former classmate and good friend Richard Abegg to Breslau. He took a position teaching chemistry at the university, and became Clara Immerwahr s academic adviser. The two developed a friendship that was both properly formal and heartfelt. 

Dr. Clara Immerwahr stayed at the university and became Richard Abegg s laboratory assistant. And this is where, a few months later, Fritz Haber s postcard found her. Two weeks later, another letter from Haber arrived, repeating his desire to see Abegg and Immerwahr during the upcoming conference in Freiburg. 

To her mentor Richard Abegg she wrote of drowning in sewing and other household work. She asked plaintively why she hadn t heard from him or his wife for so long. The dream of returning to science still flickered in her mind, but its realization would have to wait until we re millionaires and surrounded by servants. Because I can t completely leave it behind, not even in my thoughts. ... 

From Clara herself, few words are preserved from these years, as her husband climbed to prominence. The letters to Richard Abegg grew less frequent as the years passed. In 1907 there was... 

Richard Abegg s reply, like the postcard that provoked this letter, has not been preserved. Not quite a year later, in April of 1910, a hot-air balloon that Abegg was piloting crashed, killing him. He was only forty-one years old. 

In any case, auf Wiedersehen Haber to Richard Abegg and Clara Immerwahr, March 14, 1901, HC 923. 

The German chemist Richard Abegg (1869-1910) had pointed out, in 1904, that the inert gases must have a particularly stable electronic configuration. The inert gas atoms had no tendency to add to or subtract from this number, and that was why they did not participate in chemical reactions. It followed that other atoms might give up or accept electrons in order to achieve the inert gas configuration. 

The last rare-earth element, lutetium, was discovered by Urbain and independently by Auer von Welsbach. Work on rare earths was done by Richard Joseph Meyer (Berlin, 24 August 1865- ) and James Frederick Spencer (Liverpool 8 February 1881-31 December 1950), pupil of Ramsay and Abegg, professor in Bedford College, London, who also worked on magneto-chemistry. ... 

Lewis established a theory of cubical atoms consisting of a kernel and a shell, referring to Richard Abegg s extension of the coordination number to valency [4]. For his part this goes back to Alfred Werner s observation that only carbon is the lucky case where the maximum coordmatirm number is identical to the valency. 

In this chapter 1 concentrate on what Lewis had to say on the periodic system and the structure of atoms. Lewis began by paying tribute to the work of German chemist Richard Abegg, who in 1902 had proposed a rrde of valence and contravalence ... 

Eventually she became a protege of Richard Abegg (1869-1910), Haber s former classmate and a newly appointed professor of chemistry in Breslau, and she earned her magna cum laude doctorate as the first woman at the University of Breslau in December 1900. Marriage followed jnst half a year later. Their only child, Hermann, was born in 1902, and she was transformed from an eager young scientist to a dissatisfied honsewife who now shared little of her husband s preoccupation with his research. ... 

Clara Haber s letter to Richard Abegg written on July 23, 1907 is cited in Stoltzenberg (14), p. 156. Haber and Nernst were never reconciled. According to James Franck, American-... 

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