Amedeo Avogadro

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Amedeo Avogadro
Born	Amedeo Carlo Avogadro (1776-08-09)9 August 1776 Turin, Kingdom of Sardinia
Died	9 July 1856(1856-07-09) (aged 79) Turin, Piedmont-Sardinia
Nationality	Italian
Known for	Avogadro's law Avogadro constant
Scientific career
Fields	Chemistry
Institutions	University of Turin
Signature

Lorenzo Romano Amedeo Carlo Avogadro, Count of Quaregna and Cerreto^[1] (/ˌævəˈɡɑːdroʊ/,^[2] also US: /ˌɑːv-/,^[3][4][5] Italian: [ameˈdɛːo avoˈɡaːdro]; 9 August 1776 – 9 July 1856) was an Italian scientist, most noted for his contribution to molecular theory now known as Avogadro's law, which states that equal volumes of gases under the same conditions of temperature and pressure will contain equal numbers of molecules. In tribute to him, the ratio of the number of elementary entities (atoms, molecules, ions or other particles) in a substance to its amount of substance (the latter having the unit mole), 6.02214076×10²³ mol⁻¹, is known as the Avogadro constant. This constant is denoted N_A, and is one of the seven defining constants of the SI.