Per Teodor Cleve (10 February 1840 – 18 June 1905) was a Swedish chemist, biologist, mineralogist and oceanographer. He is best known for his discovery...

discovery of the element was made in 1895 by chemists Sir William Ramsay, Per Teodor Cleve, and Nils Abraham Langlet, who found helium emanating from the uranium...

the only faculty member who could have supervised him in chemistry, Per Teodor Cleve, so he left to study at the Physical Institute of the Swedish Academy...

biological role and is not particularly toxic. In 1879, the Swedish chemist Per Teodor Cleve separated two previously unknown components, which he called holmia...

substituted by rare-earth elements. It was named after Swedish chemist Per Teodor Cleve. Cleveite was the first known terrestrial source of helium, which is...

isolated in 1879, from an impure sample of erbia, by Swedish chemist Per Teodor Cleve, who named it thulia. Thulium(III) oxide has been made in the laboratory...

to Leonhard Euler. He married chemist Astrid Cleve, the daughter of the Uppsala chemist Per Teodor Cleve. In 1970, their son Ulf von Euler, was awarded...

Astrid Cleve and sister of Nobel Prize laureate in Physiology or Medicine Ulf von Euler. She was also the great-granddaughter of Per Teodor Cleve. She was...

Langlet (1872–1960). From 1886 to 1896, he studied chemistry under Per Teodor Cleve (1840–1905) at Uppsala University, where he became a philosophy graduate...

Scandium oxide was isolated in late 1879 by Lars Fredrick Nilson; Per Teodor Cleve recognized the correspondence and notified Mendeleev late in that year...

521. Per Teodor Cleve (1879). "Sur deux nouveaux éléments dans l'erbine". Comptes rendus de l'Académie des sciences. 89: 478. Per Teodor Cleve (1879)...

Mendeleev's periodic system as number 95, with the symbol Di. In 1874, Per Teodor Cleve predicted that didymium contained at least two elements. In 1879, Lecoq...

Mendeleev underestimated atomic weights for them by one third. In 1874, Per Teodor Cleve deduced that didymium was made up of at least two elements. In 1879...

identified simply as an "earth X" derived from "erbia". Independently, Per Teodor Cleve separated it chemically from thulium and erbium in 1879. All three...

lithium Lars Fredrik Nilson (1840–1899), chemist, discoverer of scandium Per Teodor Cleve (1840–1905), chemist and geologist Gerard De Geer (1848–1943), geologist...

67 Delafontaine discovered a new element and named it philippium. Per Teodor Cleve isolated it and renamed it holmium. R Rhodium 45 Current symbol is...

related to Joos Per Teodor Cleve (1840–1905), Swedish chemist and geologist Richard Cleve, Canadian computer scientist Rudolf Cleve (1919–1997), highly...

geologist and professor Per Teodor Cleve and author Carolina Alma "Caralma" Öhbom (known as Alma Cleve). Her younger sisters were Agnes Cleve-Jonand (1876-1951)...

Soret, Delafontaine first observed holmium spectroscopically. In 1879, Per Teodor Cleve chemically separated it from thulium and erbium. All three men are...

"Scandinavia". Nilson was apparently unaware of Mendeleev's prediction, but Per Teodor Cleve recognized the correspondence and notified Mendeleev. Metallic scandium...

(chair 2007–2009)) Peter Brzezinski (2021-) Oskar Widman, 1900–1928 Per Teodor Cleve, 1900–1905 Otto Pettersson, 1900–1912 Johan Peter Klason, 1900–1925...

Otto Wilhelm von Struve (born 1819), Russian astronomer June 18 – Per Teodor Cleve (born 1840), Swedish chemist August 20 – Franz Reuleaux (born 1829)...

Publication of first issue of Journal of the American Chemical Society. Per Teodor Cleve discovers the elements holmium and thulium. Lars Fredrik Nilson discovers...

Muddapur, India, by an astronomical expedition led by Pietro Tacchini Per Teodor Cleve discovers that didymium is in fact two elements, now known as neodymium...

then-unknown element (they called it "Element X"). The Swedish chemist Per Teodor Cleve also independently discovered the element while he was working on erbia...

1878 J.-L. Soret and M. Delafontaine 1879 T. Cleve Soret found it in samarskite and later, Per Teodor Cleve split Marignac's erbia into erbia proper and...

Nobel Prize for Chemistry in 1929, and his maternal grandfather was Per Teodor Cleve, Professor of Chemistry at the Uppsala University, and the discoverer...

Crookes. It is independently isolated from cleveite in the same year by Per Teodor Cleve and Abraham Langlet in Uppsala, Sweden, who determine its atomic weight...

discovery of the element was made in 1895 by two Swedish chemists, Per Teodor Cleve and Nils Abraham Langlet, who found helium emanating from the uranium...

"Scandinavia". Nilson was apparently unaware of Mendeleev's prediction, but Per Teodor Cleve recognized the correspondence and notified Mendeleev. Chemical experiments...