1.

The Balmer series for the H-atorn can be observed a) if we measure the frequencies of light emitted when an excited atom falls to the ground state (b) if we measure the frequencies of light emitted due to transitions between excited slates and the first excited state c) in any transition in a H-atom d) as a sequences of frequencies with the higher frequencies getting closely packed

Answer»

Both a&B are TRUE
Both b&C are true
Both c&d are true
Both b&d are true

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