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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
How does the existence of isotopes contradict Dalton’s atomic theory?
Complete the table below by identifying A, B, C, D, E and F.
FILL IN THE BLANK
The protons and neutrons are held firmly in the nucleus by strong .........................
How was it shown that atom has empty space?
State one major drawback of Rutherford's model.
Which metal did rutherford select for his `alpha` particle scattering experiment and why?
Choose the correct option
Rutherford's alpha-particle scattering experiment discovered
Where is the nucleus of an atom situated?
‘Electrons revolve around the nucleus in fixed orbits or shells called energy levels’. State how these energy levels are represented.
