Robert Hooke, Ole Borch, Mikhail Lomonosov, and Pierre Bayen all produced oxygen in experiments in the 17th and the 18th century but none of them recognized it as a chemical element.
Robert Hooke, Ole Borch, Mikhail Lomonosov e Pierre Bayen produciron osíxeno durante experimentos entre os séculos XVII e XVIII, pero ningún deles o recoñeceu como un elemento.