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Question
‘Electrons revolve around the nucleus in fixed orbits or shells called energy levels’. State how these energy levels are represented.
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Solution
- 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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