tantalum fluoride
71microlite — noun a) A basic fluoride of sodium, calcium, tantalum and niobium that is isomorphous with pyrochlore b) A microlith …
72Copernicium — roentgenium ← copernicium → ununtrium Hg ↑ Cn …
73Moissan , Ferdinand Frédéric Henri — (1852–1907) French chemist Moissan came from a poor background in Paris, France. He was the son of a railroad worker and was apprenticed to a pharmacist before studying chemistry under Edmond Frémy at the Muséum National d Histoire Naturelle,… …
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