Why does hydrogen emission spectrum have 4 lines?
Based on the wavelengths of the spectral lines, Bohr was able to calculate the energies that the hydrogen electron would have in each of its allowed energy levels. He found that the four visible spectral lines corresponded to transitions from higher energy levels down to the second energy level (n = 2).
Why are there so many lines in hydrogen spectrum Class 11?
Different excited electrons adopt different routes to return to various lower energy levels or the ground state.As a result ,they emit different amount of energies and thus produce a large number of lines in the atomic spectrum of hydrogen.
Why do hydrogen spectrum lines converge?
If this photon falls into the visible spectrum of light, then it produces a visible spectrum. As electrons move further away from the nucleus, the electron shells become closer together in terms of space and energy, and so lines converge towards the end of the spectrum.
Why are only four lines visible for hydrogen when calculations show many possible emission lines?
1 Expert Answer The key word here is “visible.” The human eye is only sensitive to light with wavelength between about 400 and 700 nm. If you calculate the emission spectrum of hydrogen, you will find that only four emission lines have wavelengths in this range.
How many lines does hydrogen emission spectrum have?
So, there are four lines in the visible spectrum of hydrogen. There are, of course, lots of other lines in hydrogen’s spectrum but they are all outside of our visible range so we cannot see them with our naked eye (and a diffraction grating).
Why each successive line becomes closer to the previous one?
The shorter the wavelength of the light emitted, the greater its energy. The important point is that as the energy levels get higher, the levels get closer together. I will now explain why the lines in a particular series get closer together as the wavelength decreases.
How many lines does the hydrogen spectrum have?
So, there are four lines in the visible spectrum of hydrogen.
Why are spectral lines different for each element?
As the energy levels have different values, each of the possible electron transitions within an atom will produce a photon with a different energy. As a result each produces photons with different energy and so the line spectra for different elements will be different.
Why do the spectral lines in the hydrogen atom become closer together further away from the nucleus?
stars and stellar spectra Spectral lines are produced by transitions of electrons within atoms or ions. As the electrons move closer to or farther from the nucleus of an atom (or of an ion), energy in the form of light (or other radiation) is emitted or absorbed.…
Why do spectral lines get closer together?
The spectrum lines become closer together the further from the nucleus. This is because the energy levels are closer together further from the n energy levels they are.
Why does hydrogen give large number of spectral lines despite electron?
Why does hydrogen give large number of spectral lines despite having only one electron? when a hydrogen atom, having different energy levels absorbs energy the only electron can go any of the energy levels & while radiating different spectral lines observed.
What is the hydrogen spectrum?
Hydrogen Spectrum. When a hydrogen atom emits a photon, the electron undergoes a transition from a higher energy level to a lower one (n = 3 n = 2, for example). During this transition from a higher level to a lower level, there is the transmission of light occurs. Since the energy levels of the atom are quantized,…
Why does hydrogen appear to have more than one emission line?
When its electron jumps from higher energy level to a lower one, it releases a photon. Those photons cause different colours of light of different wavelengths due to the different levels. Those photons appear as lines. For this reason, though hydrogen has only one electron, more than one emission line is observed in its spectrum.
Why does hydrogen give off different colours of light?
Although hydrogen has only one electron, it contains many energy levels. When its electron jumps from higher energy level to a lower one, it releases a photon. Those photons cause different colours of light of different wavelengths due to the different levels. Those photons appear as lines.