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CHEMIST

Peter Jacob Hjelm

1746 - 1813

Photo of Peter Jacob Hjelm

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Peter (Petter) Jacob Hjelm (2 October 1746 – 7 October 1813) was a Swedish chemist and the first person to isolate the element molybdenum in 1781, four years after its discovery by Swedish chemist Carl Wilhelm Scheele. Working with Molybdic acid, Hjelm chemically reduced molybdenum oxide with carbon in an oxygen-free atmosphere, resulting in carbon dioxide and a near-pure dark metal powder to which he gave the name 'molybdenum'. Read more on Wikipedia

Since 2007, the English Wikipedia page of Peter Jacob Hjelm has received more than 28,825 page views. His biography is available in 15 different languages on Wikipedia. Peter Jacob Hjelm is the 515th most popular chemist (down from 484th in 2019), the 921st most popular biography from Sweden (down from 764th in 2019) and the 20th most popular Swedish Chemist.

Memorability Metrics

  • 29k

    Page Views (PV)

  • 42.83

    Historical Popularity Index (HPI)

  • 15

    Languages Editions (L)

  • 4.87

    Effective Languages (L*)

  • 2.18

    Coefficient of Variation (CV)

Page views of Peter Jacob Hjelms by language


Among CHEMISTS

Among chemists, Peter Jacob Hjelm ranks 515 out of 509. Before him are Alexander Nesmeyanov, Krzysztof Matyjaszewski, Allen J. Bard, Barbara Askins, Robert Jarvik, and Alexander Pavlovich Vinogradov. After him are Mildred Cohn, Jürgen Hennig, Sabir Yunusov, Bruce Ames, Hugo Erdmann, and Yellapragada Subbarow.

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Contemporaries

Among people born in 1746, Peter Jacob Hjelm ranks 33. Before him are Charles Louis L'Héritier de Brutelle, Jean-Sifrein Maury, Charles Cameron, Robert R. Livingston, Joachim Heinrich Campe, and James Wyatt. After him are Charles Cotesworth Pinckney and Begum Samru. Among people deceased in 1813, Peter Jacob Hjelm ranks 37. Before him are Infanta Maria Ana Francisca of Portugal, Robert R. Livingston, Robert Kerr, Sophronius of Vratsa, Alexander Wilson, and James Wyatt. After him are Zebulon Pike, Samuel Osgood, George Clymer, and Benjamin Stoddert.

Others Born in 1746

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Others Deceased in 1813

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In Sweden

Among people born in Sweden, Peter Jacob Hjelm ranks 921 out of 1,612. Before him are Erik Svensson (1903), Göte Hagström (1918), Majgull Axelsson (1947), Roger Pontare (1951), Evy Berggren (1934), and Nils Ramm (1903). After him are Kjell Espmark (1930), Ingemar Hedberg (1920), Joacim Cans (1970), Per Wästberg (1933), Magnus Samuelsson (1969), and Sven Forssman (1882).

Others born in Sweden

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Among CHEMISTS In Sweden

Among chemists born in Sweden, Peter Jacob Hjelm ranks 20. Before him are Anders Gustaf Ekeberg (1767), Lars Fredrik Nilson (1840), Anders Jahan Retzius (1742), Nils Gabriel Sefström (1787), Anna Sundström (1785), and Per Teodor Cleve (1840).

Swedish born Chemists

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