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The number of spectral lines in the UV region, during the transition from 5^thexcited to 1^st excited state

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Zero

answer is D.

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Detailed Solution

: 5^th excite, i.e. $n_{2}$ = 6 , 1st excited state i.e. $n_{1}$ = 2 . There is no spectral lines in UV because UV region belongs to Lyman series where n₁ value is 1 not 2.

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