eka-boron
Look at other dictionaries:
Timeline of chemical elements discoveries — The discovery of the elements known to exist today is presented here in chronological order. The elements are listed generally in the order in which each was first defined as the pure element,[clarification needed] as the exact date of discovery… … Wikipedia
List of chemical element name etymologies — This is the list of etymologies for all chemical element names: Name Symbol Language of origin Word of origin Meaning Symbol origin Description Actinium Ac Greek ἀκτίς (aktis) beam Greek aktinos ἀκτίς, ἀκτῖνος (aktis; aktinos), meaning beam (ray) … Wikipedia
periodic law — /pear ee od ik, pear /, Chem. 1. the law that the properties of the elements are periodic functions of their atomic numbers. 2. Also called Mendeleev s law. (originally) the statement that the chemical and physical properties of the elements… … Universalium
History of the periodic table — The history of the periodic table reflects over a century of growth in the understanding of chemical properties, and culminates with the publication of the first actual periodic table by Dmitri Mendeleev in 1869.[1] While Mendeleev built upon… … Wikipedia
Mendeleev , Dmitri Ivanovich — (1834–1907) Russian chemist Mendeleev was the youngest child of a large family living in Tobolsk, Siberia. His father was a local school teacher whose career was ended by blindness and to support the family his mother ran a glass factory.… … Scientists
Cleve, Per Teodor — ▪ Swedish chemist born Feb. 10, 1840, Stockholm, Swed. died June 18, 1905, Uppsala Swedish chemist who discovered the elements holmium and thulium. Cleve became assistant professor of chemistry at the University of Uppsala in 1868 and … Universalium
scandium — noun a metallic chemical element, atomic number 21, obtained from some uranium ores; it is a transition element. Syn: eka boron See Also: scandia, Scandinavia … Wiktionary
Cleve , Per Teodor — (1840–1905) Swedish chemist Cleve, who was born in the Swedish capital Stockholm, became assistant professor of chemistry at the University of Uppsala in 1868 and was later made professor of general and agricultural chemistry there. He is mainly… … Scientists
Metalloid — 13 14 15 16 17 2 B Boron … Wikipedia
Francium — radon ← francium → radium Cs ↑ Fr ↓ Uue … Wikipedia
