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halogen
1842, from Swedish, coined by Swed. chemist Baron Jöns Jakob Berzelius (1779-1848) from Gk.
hals
(gen.
halos
) "salt" +
-gen
"giving birth to" (see
-gen
); so called because a salt is formed in reactions involving these elements.
halide
1876, from
halogen
+ chemical suffix
-ide
.
