Give two drawbacks of Dalton’s atomic theory?
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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.
According to Dalton, the atoms of same element are similar in all respects. However, atoms of some elements vary in their masses and densities. These atoms of different masses are called isotopes. For example, chlorine has two isotopes with mass numbers 35 and 37.
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.
According to Dalton, the atoms of same element are similar in all respects. However, atoms of some elements vary in their masses and densities. These atoms of different masses are called isotopes. For example, chlorine has two isotopes with mass numbers 35 and 37.
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Hey !!
DRAWBACKS OF DALTON'S THEORY
1) It does not explain why atoms of different elements differ in their mass, valencies etc.
2) It does not explain how and why atoms of elements combine with each other to form molecules.
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