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Korean language best language in the World My name is Rishika and I am study 9th class My dreams dancer |
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Answer» tion: A theory of chemical COMBINATION, first stated by John DALTON in 1803. It involves the following postulates: (1) Elements consist of indivisible small PARTICLES (atoms). (2) All atoms of the same element are IDENTICAL; different elements have different types of atom. (3) Atoms can neither be created nor destroyed. |
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