PPT Slide

20

• When a sample of atomic hydrogen absorbs  energy, different H atoms absorb different  amounts.

• In various atoms all the allowable energy  levels (orbits) are populated by electrons.

• Transitions from outer orbits to n = 3  gives the infrared series of spectral lines.

• Transitions from outer orbits to n = 2  gives the visible series of spectral lines.

• Transitions from outer orbits to n = 1  gives the ultraviolet series of lines.

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