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Q.

When the excited electrons of a H atom from n = 5 drops to the ground state, the maximum number of emission lines observed are _____

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answer is 10.

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Detailed Solution

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 maximum number of spectral lines

.Maximum number of emission lines from nth energy state to ground state is given by:

=n(n−1)/2​=5(5−1)/2​=20/2​=10 lines.

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