Wave number of spectral line for a given transition is `x cm^(-1)` for `He^(+)`, then its value for `Be^(3+)` (isoelectronic of `He^(+))` for same transition is:

The ratio of the wavelengths for 2 rarr 1 transition in Li^(++), He^(+) and H is

The ratio of the wavelengths for 2 rarr 1 transition in Li^(++), He^(+) and H is

The ratio of the wavelengths for 2 rarr 1 transition in Li^(++), He^(+) and H is

Statement : Wave number of a spectral line for an electronic transition is quantised . Explanation : Wave number is directly proportional to the velocity of electron undergoing the transition .

Calculate the wave number of the first spectral line in the Lyman series of He^(+) spectrum

Calculate the wave number of the first spectral line in the Lyman series of He^(+) spectrum

Calculate the wave number of the first spectral line in the lyman series of He^(+) spectrum.

Wavelength of a particular transition of H atom is 400 nm. What an be the wavelength of He^(+) for the same transition-