when is H-Alpha line of the balmer series in the emission spectrum of hydrogen atom obtained?

When a electron makea transition from 2 excited state of H atom to the 1 excited state
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No, the above answer is wrong!

It happens when the electron transits from its 3rd lowest energy level to 2nd lowest energy level. ie. from n=3 -->n=2
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then what is the right answer
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i found ... 3 -> 2 is the right answer .... .☺
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n = 3 to n = 2 is called Balmer-alpha or H-alpha
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The first member of the Balmer series is called H alpha line . It is obtained from transition n=3 to n=2.
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