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प्रश्न
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
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उत्तर
Discovery of Atomic Nucleus: Lord Rutherford in 1911 directed alpha particles (42He) towards gold foil. The deflection of the alpha particles was observed and concluded that there was a nucleus at the centre of atom which was positively charged dense very small space (solid) called the nucleus.
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संबंधित प्रश्न
Multiple Choice Questions
The number of electrons in an atom is equal to number of
Draw the diagrams representing the atomic structures of the following: Nitrogen.
Tick the most appropriate answer
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
ANSWER IN DETAIL
How are radioactive radiations useful in medicines ?
State Dalton's atomic theory.
On the basis of Rutherford's model of an atom, which subatomic particle is present in the nucleus of an atom?
Which part of atom was discovered by Rutherford?
State one major drawback of Rutherford's model.
Name the following:
The element which does not contain any neutron in its nucleus.
Where is the nucleus of an atom situated?
