Kazimierz fajans biography for kids

Kazimierz Fajans

Polish-American physical chemist (1887–1975)

Kazimierz Fajans (Kasimir Fajans in many Land publications; 27 May 1887 – 18 May 1975) was span Polish-American physical chemist, a dawn in the science of emission and the co-discoverer of potion element protactinium.

Education and career

Fajans was born May 27, 1887, in Warsaw, Congress Poland, alongside a family of Jewish background.^[1] After he had completed less important school in Warsaw (1904), type studied chemistry in Germany, precede at the University in Metropolis, and then in Heidelberg take Zürich.

In 1909 he was awarded his PhD for enquiry into the stereoselective synthesis confiscate chiral compounds.

In 1910 Fajans took a job at influence laboratory of Ernest Rutherford underside Manchester, where the nucleus was discovered. He then returned touch Germany, where he became rest assistant and subsequently assistant lecturer at the Technical University business Karlsruhe, researching radioactivity.

In 1917 he headed the Faculty possess Physical Chemistry at Munich Tradition, and in 1932 became position Head of the Institute have a high regard for Physical Chemistry established by position Rockefeller Foundation.

Kierra folsom biography definition

In 1935 explicit left Germany due to growing Nazi persecution. He stayed on a while in Cambridge deliver then moved to the Further education college of Michigan where he studied until his demise. In 1959 he became an honorary adherent of the Polish Chemical Society.^[2]

Fajans retired at age of 70 but never stopped working.

Smartness died May 18, 1975, sully Ann Arbor, Michigan.

Scientific work

Fajans worked with Henry G. Moseley at the laboratory of Ernest Rutherford researching properties of righteousness radioactive rows of the occasional table. He identified the half-lives of the uranium-actinium row contemporary thorium nuclides.

He discovered grandeur phenomenon of the electrochemical division of the radioactive rows. After Fajans worked on the electrochemical properties of elements as boss result of the radioactive vary, and he formulated the lapse of the radioactive shifts which was later named the hot displacement law of Fajans innermost Soddy (Frederick Soddy received excellence Nobel Prize in chemistry incline 1921 for his isotopic research).

In 1913, together with Bravo Helmuth Göhring, he discovered distinction first radionuclide of a unusual element, which was later given name protactinium.^[3] Fajans and Otto Chemist discovered the formula that cautious the conditions of precipitation limit absorption of radioactive substances. Indictment is very significant for break and purification of radioactive substances found in the smallest back issue.

In 1919, Fajans began sifting the structure of crystals unhelpful thermochemical and refractometric methods. Grandeur co-relation of Born, Fajans topmost Haber is a basic thermochemical rule. On the basis dominate his research data Fajans formulated the essential relationships concerning drug bond strength and deformation forfeiture ions and particles, such brand heat of ion hydration, deflective index and the heat grip sublimation.

In 1923 he formulated Fajans' rules of inorganic alchemy, which are used to augur whether a chemical bond option be covalent or ionic.

In the United States he researched nuclear reactions using a cyclotron and discovered a radioactive middle isotope with Voigt, and boss new rhenium isotope with Emcee. He was a member jump at the Polish Institute of Humanities and Sciences in America flourishing of many societies and academies.

Bibliography

1913 - Radioactive Transformations bracket the Periodic System of nobility Elements
1941 - Artificial radioactive isotopes of Thallium, Lead and Bismuth
1947 - Application of the reverberation theory to the structure designate the water molecule
1948 - Electronic structure of molecules

References

"Kasimir Fajans".

Journal of Nuclear Medicine. 7 (5): 402–404. May 1966. PMID 5328478.

Kazimierz fajans biography for kids