A) Lyman, ultraviolet
B) Lyman, visible
C) Balmer, ultraviolet
D) Balmer, visible
Correct Answer: D
Solution :
In 1885, Balmer for the first time showed that the wave numbers of spectral lines present in the visible region in hydrogen spectrum are given by \[\bar{v}(c{{m}^{-1}})=109677\left( \frac{1}{{{(2)}^{2}}}-\frac{1}{{{n}^{2}}} \right)\] Here, \[n=3,\,\,4,\,\,5,\text{ }...\] Thus, Balmer spectrum of hydrogen was discovered first and it lies in the visible region.
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