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Marguerite Catherine Perey (19 October 1909 – 13 May 1975) was a French physicist and a student of Marie Curie. In 1939, Perey discovered the element francium by purifying samples of lanthanum that contained actinium. In 1962, she was the first woman to be elected to the French Académie des Sciences, an honor denied to her mentor Curie.
Francium was discovered by Marguerite Perey [5] in France (from which the element takes its name) on January 7, 1939. [6] Before its discovery, francium was referred to as eka-caesium or ekacaesium because of its conjectured existence below caesium in the periodic table. It was the last element first discovered in nature, rather than by synthesis.
Francium In 1939, Marguerite Perey, a student of Marie Curie, discovered the element francium by purifying samples of lanthanum that contained actinium. Perey first noticed that the actinium she purified was emitting unexpected radiation. After further study she was able to isolate this new element which she named "francium" for France. [31]
Aside from the named above, other physicists and physicochemists that were nominated to the Nobel Prize in Chemistry but dit not receive it, include Ida Noddack, [21] Marguerite Perey, [22] Alberte Pullman, [23] and Erika Cremer. [24] Up to 1970, eight female scientists have participated as nominators for the Nobel Prize in Physics.
Marguerite Perey presented her thesis, L'élément 87: Actinium K, at the Sorbonne, defending her proof that she had discovered the last of the natural elements. The element with atomic number 87 has, ever since, been referred to by the name proposed by Perey, in honor of her native land, "francium". [49]
Teresa K. Attwood, professor of bioinformatics. This is a timeline of women in science, spanning from ancient history up to the 21st century. While the timeline primarily focuses on women involved with natural sciences such as astronomy, biology, chemistry and physics, it also includes women from the social sciences (e.g. sociology, psychology ...
Francium was discovered by Marguerite Perey in France (from which the element takes its name) in 1939. [8] It was the last element discovered in nature, rather than by synthesis. [note 2] Outside the laboratory, francium is extremely rare, with trace amounts found in uranium and thorium ores, where the isotope francium-223 continually forms and ...
The first woman admitted as a correspondent member was a student of Curie's, Marguerite Perey, in 1962. The first female full member was Yvonne Choquet-Bruhat in 1979. [23] Membership in the academy is highly geared towards representing common French populace demographics. French population increases and changes in the early 21st century led to ...