- Née:
- Ida Eva Tacke
- Born:
- February 25, 1896, Lackhausen (now Wesel), Germany
- Died:
- September 24, 1978, Bad Neuenahr, Germany (aged 82)
- Subjects Of Study:
- nuclear fission
- rhenium
Ida Noddack
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Who was Ida Noddack?
Ida Noddack (1896–1978) was a German chemist who co-discovered rhenium with her husband Walter Noddack and Otto Carl Berg in 1925. She earned bachelor's and doctoral degrees from the Technical University in Berlin in 1919 and 1921, respectively.
Noddack is also credited with first proposing the concept of nuclear fission. In 1934, she suggested that bombarding uranium with neutrons could produce smaller nuclei, but her idea was dismissed at the time.
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What field of science did Ida Noddack work in?
Ida Noddack was a German chemist. She co-discovered the element rhenium and first proposed nuclear fission. Working with Walter Noddack and Otto Carl Berg, she aimed to find elements predicted by Mendeleyev. In 1925, they announced discovering rhenium (atomic number 75).
In 1934, Noddack suggested that bombarding uranium with neutrons could produce smaller nuclei, introducing nuclear fission. Though initially disregarded, this concept was later validated by Otto Hahn and Fritz Strassmann.
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What element did Ida Noddack help discover?
Ida Noddack, along with chemists Walter Noddack and Otto Carl Berg, discovered rhenium in 1925. They detected it by bombarding platinum and columbite ores with electrons and analyzing the emitted X-ray spectra.
Noddack is also credited with first proposing the concept of nuclear fission. She suggested that bombarding uranium with neutrons could produce smaller nuclei, a hypothesis initially disregarded but later confirmed by Otto Hahn and Fritz Strassmann.
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How did Ida Noddack contribute to our understanding of atomic science?
Ida Noddack, a German chemist, made significant contributions to atomic science through her codiscovery of rhenium and her early proposal of nuclear fission. In 1925, she and her colleagues discovered rhenium by bombarding platinum and columbite ores with electrons.
Later, in 1934, Noddack proposed that bombarding uranium with neutrons could produce smaller nuclei, a concept initially dismissed but later proven in 1938 by Otto Hahn and Fritz Strassmann. Despite this, her assertion of the prior discovery of nuclear fission in 1939 was largely ignored due to the controversy surrounding her previous work.
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What challenges did Ida Noddack face as a female scientist in Germany?
As a female scientist in Germany, Ida Noddack faced several challenges. Despite her codiscovery of rhenium and her early proposal of nuclear fission, her work was often dismissed or ignored by the scientific community. Her suggestion of nuclear fission, for instance, was disregarded because it was unsupported by clear chemical evidence and contradicted accepted views of nuclear physics at the time.
Additionally, after the discovery of Rhenium, Noddack and her husband claimed to discover element 43, Masurium. However, they were unable to extract it. Because of this, the scientific community dismissed their results. It wasn't until years later that others discovered that element 43 required a particle accelerator to be produced, making it unlikely that the Noddacks discovered it.
Noddack also faced challenges due to her gender, as women in Germany had limited access to higher education and academic positions. For much of her career, she held the position of researcher at universities where her husband was a professor.
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How is Ida Noddack's work recognized by scientists today?
Ida Noddack, a German chemist, is recognized today for her co-discovery of rhenium and her early proposal of nuclear fission. In 1925, she, along with Walter Noddack and Otto Carl Berg, discovered rhenium by bombarding platinum and columbite ores with electrons.
Noddack was also the first to propose the concept of nuclear fission. In response to Enrico Fermi's claims of creating transuranium elements, Noddack suggested that uranium could break into smaller nuclei upon neutron bombardment. Though initially dismissed, this idea was later confirmed by Otto Hahn and Fritz Strassmann. Today, Noddack is recognized as a pioneering woman in science who made significant contributions to chemistry and nuclear physics.
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Ida Noddack (born February 25, 1896, Lackhausen (now Wesel), Germany—died September 24, 1978, Bad Neuenahr, Germany) was a German chemist who codiscovered the chemical element rhenium and who first proposed the idea of nuclear fission.
Tacke received a bachelor’s and a doctoral degree from the Technical University in Berlin in 1919 and 1921, respectively. In 1925 she became a researcher at the Physico-Technical Research Agency in Berlin, where she began collaborating with chemists Walter Noddack and Otto Carl Berg.
When Russian chemist Dmitry Mendeleyev proposed the periodic table of the chemical elements in 1871, he left gaps in places where he believed unknown elements would find their place. Two such gaps were below manganese at atomic numbers 43 and 75. Tacke, Noddack, and Berg set out to discover these two elements, and in 1925 they bombarded platinum and columbite ores with electrons, which collided with atomic nuclei that then emitted X-rays. The atomic number of an element could thus be deduced from the spectrum of X-rays that the nuclei emitted. They announced the detection of the two predicted elements: atomic number 43, which they called masurium, after the region in Prussia that Noddack had come from, and atomic number 75, which they called rhenium, after the Latin name for the Rhine River.
Walter Noddack and Tacke married in 1926. Rhenium had been confirmed in 1925 shortly after its discovery, and by 1928 the Noddacks had been able to extract 1 gram (0.04 ounce) of rhenium from more than 600 kg (1,300 pounds) of molybdenite. However, masurium was more controversial because they were unable to extract it. Despite dismissal of their results by the scientific community, the Noddacks stood by their claims about masurium. It was not until 1937 that Italian mineralogist Carlo Perrier and Italian-born American physicist Emilio Segrè produced atomic number 43 (technetium) in a cyclotron. Since a particle accelerator was required to produce technetium, it was considered unlikely that the Noddacks had actually discovered the element.
In 1934 Italian physicist Enrico Fermi claimed possible production of atomic elements heavier than uranium (or transuranium elements) after bombardment of uranium with neutrons. However, in a paper on Fermi’s discovery, Noddack noted in passing that the bombardment of uranium could have actually produced smaller nuclei. Her suggestion was the first proposal of the concept of nuclear fission. However, it was ignored at the time because it entailed such a broad departure from the accepted views of nuclear physics and was unsupported by clear chemical evidence. In 1938 German chemists Otto Hahn and Fritz Strassmann showed that the uranium had indeed split apart into lighter elements and that fission was possible. In 1939 Noddack asserted her prior discovery of nuclear fission. Hahn and Strassmann refused to answer Noddack’s charges. However, by this time, the Noddacks were seen as scientifically suspect because of masurium, and Noddack’s claim was ignored.
Noddack followed Walter to the University of Freiburg in 1935, where she was appointed as a research associate. For the remainder of her career, Noddack took the position of researcher at universities where Walter was appointed as a professor. In 1942 the Noddacks moved to the University of Strasbourg in Nazi-occupied France. When Strasbourg returned to French control in 1944, the Noddacks returned to Germany. After the end of World War II, they spent several years in Turkey. In 1956 they returned to Germany to work for the State Research Institute for Geochemistry in Bamberg. Noddack retired in 1968.