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प्रश्न
How does the existence of isotopes contradict Dalton’s atomic theory?
लघु उत्तरीय
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उत्तर
- Atoms are not indivisible, they can be further divided into fundamental particles electrons, protons and neutrons.
- Every atom of an element is not identical. Isotopes are the atoms of same element with same atomic number but different mass number, that means they have same number of protons and electrons but differ in their number of neutrons.
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Discovery of Charged Particles in Matter - Nucleus
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संबंधित प्रश्न
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Which one of the following scientists put forward the theory regarding the extra-nuclear structure of the atom?
- James Chadwick
- John Dalton
- Rutherford
- Niels Bohr
TRUE \ FALSE
Uranium-235 and uranium-238 both undergo nuclear fission.
WRITE SHORT ANSWER
What is the central part of an atom known as?
ANSWER IN DETAIL
How are radioactive radiations useful in medicines ?
Which part of atom was discovered by Rutherford?
How was it shown that atom has empty space?
State one major drawback of Rutherford's model.
Name the following:
The element which does not contain any neutron in its nucleus.
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
What is meant by the term nucleus
