Question

The absorption spectrum is the characteristic pattern of dark lines or bands that occurs when electromagnetic radiation is passed through a medium into a spectroscope. Suppose radiation with a continuous spectrum is shined on a gas of hydrogen gas whose atoms are all in the ground state, which spectral series will be missing in the resulting absorption spectrum?

Answer 1

A hydrogen atom consists of an electron, with a -ve electrical charge, orbiting a proton, which carries a +vecharge.

The energy absorbed by the atom caused changes in the motion of the orbiting electron. By absorbing some light energy from a source of electromagnetic radiation,The hydrogen atom get excited.Due to ground state and 1st excited state we get Layman and balmer series .Paschen series (due to 2nd excited state), the Brackett series (due to 3rd excited state), and the Pfund series (4th excited state)

A/C to question if only electrons are in ground state then only Layman series is present in the spectrum.