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Hydrogen
Discovered in 1766 by Henry Cavendish.
Named by Antoine Lavoisier in 1783. -
Oxygen
Discovered in 1771 by Carl Wilhelm Scheele.
Named by Antoine Lavoisier in 1777. -
Nitrogen
Discovered in 1772 by Daniel Rutherford.
Named by Jean-Antoine Chaptal in 1790. -
Chlorine
Discovered and isolated in 1774 by Carl Wilhelm Scheele. First recognized as an element by Humphry Davy in 1808. -
Fluorine
Discovered in 1810 by André-Marie Ampère. Named by Humphry Davy. First isolated in 1886 by Henri Moissan.