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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
Fill in the blank
The ..........................of an atom is very hard and dense.
Multiple Choice Questions
The number of electrons in an atom is equal to number of
FILL IN THE BLANK
The protons and neutrons are held firmly in the nucleus by strong .........................
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
State Dalton's atomic theory.
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.
Differentiate between the following term:
Nucleus and nucleons
