Question

Why was Dalton's model of atom rejected

Answer 1

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Drawbacks of Dalton's Atomic Theory

The indivisibility of an atom was proved wrong: an atom can be further subdivided into protons, neutrons and electrons. However an atom is the smallest particle that takes part in chemical reactions. ... Dalton also claimed that atoms of different elements are different in all respects.

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Answer 2

Answer:

According to Dalton atoms of different elements combine in simple whole number ratio to form compounds. This is not seen in complex organic compounds like sugar C12H22O11. The theory fails to explain the existence of allotropes.