Answer
n=4 to n=9; n=3 to n=6; n=2 to n=3; n=1 to n=2
Work Step by Step
The increasing frequency of light absorbed is n=4 to n=9; n=3 to n=6; n=2 to n=3; n=1 to n=2 as each transition is moving from a lower to a higher state.
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