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प्रश्न
How does the existence of isotopes contradict Dalton’s atomic theory?
लघु उत्तर
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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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Multiple Choice Questions
The number of electrons in an atom is equal to number of
Complete the table below by identifying A, B, C, D, E and F.
FILL IN THE BLANK
Nuclear energy can be used to make ..........................
TRUE \ FALSE
Uranium-235 and uranium-238 both undergo nuclear fission.
ANSWER IN DETAIL
What are the various components of a nuclear power plant?
ANSWER IN DETAIL
How are radioactive radiations useful in medicines ?
How was it shown that atom has empty space?
Where is the nucleus of an atom situated?
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
Differentiate between the following term:
Nucleus and nucleons
