**1)**

The spectral lines produced in the transition from n_{i} = 6 to n_{f} = 3 is of more energy compared to a transition from n_{i} = 5 to n_{f} = 3.

The wavelength for the first transition is also less than the wavelength for the second transition.

Therefore, n_{i} = 6 to n_{f} = 3 has a decreasing wavelength.

The spectrum of a hypothetical atom is shown in the figure. Three distinct spectral series are shown, with the center series corresponding to transitions to a final state of n_{f} = 3. The indicated spectral line corresponds to the transition from an initial state of n_{i} = 5 to the final state n_{f} = 3.

QUESTION:

1) Which of the lettered spectral lines corresponds to the transition from n_{i} = 6 to n_{f} = 3?

A, B, C, D E, F, G, H

2) Which of the lettered spectral lines corresponds to the transition from n_{i} = 5 to n_{f} = 4?

A, B, C, D, E, F, G, H

3) Which of the lettered spectral lines corresponds to the transition from n_{i} = 5 to n_{f} = 2?

A, B, C, D, E, F, G, H

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