what was the first indication that the atoms are not divisible? class 9
Answers
Answer:
Dalton's atomic theory
Explanation:
The classification of elements examined in the previous section was made possible only after reasonably reliable atomic weights were widely available and accepted. Thus the most salient feature of the Daltonian atom, its weight, was crucial to the development of the natural classification of elements--even though Dalton's own rules for determining atomic weights proved inadequate. Dalton's idea of the atom was to be shown inadequate in other ways, as scientists found ways to probe matter at ever smaller scales.
The final selections of this volume will examine the downfall of notion of atoms as indivisible. The atom as an ultimate and therefore indivisible particle of matter was a venerable and a viable scientific notion for many years [Newton 1704]. That is not to say that the indestructibility of the atom was universally accepted by scientists in the 19th century. Indeed, not even the existence of the atom was universally accepted for most of the century!
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Answer:
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Explanation: