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This text highlights key elements of the periodic table, including Hydrogen, Scandium, Boron, Lanthanum, Lithium, Yttrium, Aluminium, and Actinium. Each element's discovery, atomic number, atomic weight, and etymology are detailed, showcasing the historical significance and naming origins rooted in Greek, Latin, Arabic, and Persian languages. From Hydrogen's discovery by Henry Cavendish in 1766 to Actinium's by André Debierne in 1899, this collection represents pivotal moments in chemistry.
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Periodic TableWeb Elements Cecilia Aceves 1st Hour
Hydrogen • Hydrogen was discovered by Henry Cavendish at 1766 in London, England. Origin of name: from the Greek words "hydro" and "genes" meaning "water" and "generator". • Atomic number: 1 • Atomic weight: 1.00794 (7)
Scandium • Scandium was discovered by Lars Fredrik Nilson at 1879 in Sweden. Origin of name: from the Latin word "Scandia" meaning "Scandinavia". • Atomic number: 21 • Atomic weight: 44.955912 (6)
Boron • Boron was discovered by Sir Humphrey Davy, Joseph-Louis Gay-Lussac, L.J. Th&�nard at 1808 in England, France. Origin of name: from the Arabic word "buraq" and the Persian word "burah" . • CAS Registry ID: 7440-42-8 • Atomic weight: 10.811 (7)
Lanthanum • Lanthanum was discovered by Carl GustafMosander at 1839 in Sweden. Origin of name: from the Greek word "lanthanein" meaning "to lie hidden". • Atomic number: 57 • Classification: Metallic
Lithium • Lithium was discovered by Johan August Arfvedson at 1817 in Stockholm, Sweden. Origin of name: from the Greek word "lithos" meaning "stone", apparently because it was discovered from a mineral source whereas the other two common Group 1 elements, sodium and potassium, were discovered from plant sources.. • Group name: Alkali metal • Standard state: solid at 298 K
Yttrium • Yttrium was discovered by Johann Gadolin at 1794 in Finland. Origin of name: named after the village of "Ytterby" near Vaxholm in Sweden. • Atomic number: 39 • CAS Registry ID: 7440-65-5
Aluminium • Aluminium was discovered by Hans Christian Oersted at 1825 in Denmark. Origin of name: from the Latin word "alumen" meaning "alum". • Standard state: solid at 298 K • Classification: Metallic
Actinium • Actinium was discovered by Andre Debierne at 1899 in France. Origin of name: from the Greek word "aktinos" meaning "ray". • Atomic number: 89 • Block in periodic table: f-block