question_answer

One of the lines in the emission spectrum of \[L{{i}^{2+}}\] has the same wavelength as that of the 2nd line of Balmer series in hydrogen spectrum. The electronic transition corresponding to this line is

A)  \[n=4\to n=2\]

B)  \[n=8\to n=2\]

C)  \[n=8\to n=4\]

D)  \[n=12\to n=6.3\]