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प्रश्न
‘Electrons revolve around the nucleus in fixed orbits or shells called energy levels’. State how these energy levels are represented.
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उत्तर
- Electrons revolve around the nucleus in – fixed ‘orbits’ called energy levels
- The energy levels 1, 2, 3… are represented by – integer ‘n’ or as K, L, M, N…
- Electrons rotate around the nucleus, in one or more of the energy levels.
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संबंधित प्रश्न
Fill in the blank
The ..........................of an atom is very hard and dense.
FILL IN THE BLANK
The protons and neutrons are held firmly in the nucleus by strong .........................
FILL IN THE BLANK
Nuclear energy can be used to make ..........................
ANSWER IN DETAIL
How are radioactive radiations useful in medicines ?
State Dalton's atomic theory.
Which metal did rutherford select for his `alpha` particle scattering experiment and why?
What are nucleons? How many nucleons are present in phosphorus? Draw its structure.
Name the following:
The element which does not contain any neutron in its nucleus.
Explain in brief – Lod Rutherford’s experiment which led to the discovery of the atomic nucleus.
Explain in brief the experimental proof which led to the discovery of –
Atomic nucleus
