V
VISHNU
06 Apr 19

Atomic proposed by ?

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M
Muhammad

Democritus first suggested the existence of the atom but it took almost two millennia before the atom was placed on a solid foothold as a fundamental chemical object by John Dalton (1766-1844). Although two centuries old, Dalton's atomic theory remains valid in modern chemical thought. 1) All matter is made of atoms.
Dalton's atomic theory

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