Spectrum of `Li^(2+)` is similar to that of

The spectrum of He is expected to be similar to that of

The spectrum of He is expected to be similar to that of

Helium gives characteristic spectrum with orange light which is similar to that of

Which of the following species are expected to give the line spectrum similar to that of hydrogen atom?

The spectrum of He^(+) is expected to be similar to that of

The spectrum of He^(+) is expected to be similar to that of

One of the lines in the emission spectrum of Li^(2 +) has the same wavelength as that of the second line of Balmer series in hydrogen spectrum. The electronic transition correspnding to this line is.