What is the maximum number of emission lines in hydrogen when the excited electron drops from the 7th excited state to the ground state?
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maximum number of emission lines from n^th energy state to ground state is given :
ㅤㅤ n (n - 1) ㅤ 6 (6 - 1) ㅤㅤ30
=ㅤ ㅤ ----------- = ---------- = --------
ㅤㅤ ㅤ 2 ㅤㅤ ㅤ 2 ㅤㅤ ㅤ 2
= ㅤㅤ 15 lines
Therefore,
the maximum number of emission lines formed when the excited electron of H atom in n = 6 drops to the ground state is 15.
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