Q: Which of the following is true for an excited electron? Can it move from a) 1s to 2s, b) 4f to 5g, c) 3s to 2p, d) 4s to 3s)?

Which of the following is true for an excited electron? Can it move from a) 1s to 2s, b) 4f to 5g, c) 3s to 2p, d) 4s to 3s)?

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