Gallium [SEP] discoverer or inventor
eka-aluminium would dissolve slowly in both acids and alkalis and would not react with air. He also predicted that MO would dissolve in acids to give MX salts, that eka-aluminium salts would form basic salts, that eka-aluminium sulfate should form alums, and that anhydrous MCl should have a greater volatility than ZnCl: all of these predictions turned out to be true.
Gallium was discovered using spectroscopy by French chemist Paul Emile Lecoq de Boisbaudran in 1875 from its characteristic spectrum (two violet lines) in a
his work in celestial mechanics.
- Paul-Émile Lecoq de Boisbaudran, chemist, discoverer of gallium, samarium and dysprosium.
- Jacques-Arsène d'Arsonval, physician, physicist, and inventor of the moving-coil D'Arsonval galvanometer and the thermocouple ammeter.
- Auguste Charlois, astronomer, who discovered around 99 asteroids.
- Jean Gaston Darboux, mathematician, he made several important contributions to geometry and mathematical analysis.
- Arthur Fallot, physician, who described in detail the four anatomical characteristics of the tetralogy