John Wesley Marden

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12 Novels Considered the “Greatest Book Ever Written”

John Wesley Marden

American chemist

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isolation of vanadium

In vanadium
…VCl₂, and the American chemists John Wesley Marden and Malcolm N. Rich obtained it 99.7 percent pure in 1925 by reduction of vanadium pentoxide, V₂O₅, with calcium metal.
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