The wavelength of the spectral live the Balner series of hydrogen atom is `6561 A^(@)` . The wavelength of the second spectralline in the Balmer series of singly - ionized belium atom is

The wavelength of the first spectral line in the Balmer series of hydrogen atom is 6561 A^(@) . The wavelength of the second spectral line in the Balmer series of singly - ionized helium atom is

The wavelength of the first spectral line in the Balmer series of hydrogen atom is 6561 Å. If the wavelength of the spectral line in the Balmer series of singly-ionized helium atom is 1215 when electron jumps from n_2 to n_1 , then n_2 and n_1 , are

The wavelength of the third line of the Balmer series for a hydrogen atom is -

The wavelength of the third line of the Balmer series for a hydrogen atom is -

The wavelength of the third line of the Balmer series for a hydrogen atom is -