Why are there so many spectral lines?

Why are there so many spectral lines?

while radiating the electron can go back any one of the energy levels corresponding to different spectral lines.in a mass of hydrogen a large number of hydrogen atoms are present so for different atoms a large number of spectral lines are observed.

Why do some elements produce more spectral lines than others?

Depending on the number of transitions in each atom and the energy levels in it, photons of different wavelengths and thus different colors are released from each gas. The spectra for each element are unique because each element contains differing numbers of electrons and thus different energy levels.

What is the importance of spectral lines?

From spectral lines astronomers can determine not only the element, but the temperature and density of that element in the star. The spectral line also can tell us about any magnetic field of the star. The width of the line can tell us how fast the material is moving.

What is broadening of spectral lines?

line broadening, in spectroscopy, the spreading across a greater wavelength, or frequency range, of absorption lines (dark) or emission lines (bright) in the radiation received from some object.

Why do some spectral lines appear more intense and bright than other lines in a line spectra?

In hydrogen spectrum,some spectral lines are brighter than others depending upon their energy level. When electron jumps from some higher orbit,the energy released in the from of photon will be greater,and we get a brighter line. Thus in hydrogen spectrum some lines are brighter than others.

Why do spectral lines have width?

For atoms and molecules, the width of spectral lines is governed mainly by the broadening of the energy levels of the atoms or molecules during interactions with surrounding particles and by the broadening of the spectral lines as a result of the Doppler effect.

Why does line broadening occur?

The broadening is partly an extremely small intrinsic effect produced within the absorbing or radiating atom (natural broadening) that is related to the Heisenberg uncertainty principle; it can include effects due to external conditions also, such as collisions with other atoms, motion of the radiating or absorbing …

How are spectral lines both emission and absorption are formed?

When electrons move from a higher energy level to a lower one, photons are emitted, and an emission line can be seen in the spectrum. Absorption lines are seen when electrons absorb photons and move to higher energy levels.

Why does neon have more spectral lines than hydrogen?

So, the transition of electrons will be higher in neon discharge lamps as it contains more energy shells. Therefore, the discharged lamp containing neon produces more distinct spectral lines in comparison to the hydrogen atom.

Why are the spectral lines produced by exciting the electrons in hydrogen discontinuous?

If an electron is excited to a new energy level, it jumps to that level instantaneously. When it returns to a lower level, it releases energy in a quantized packet. Each packet of energy corresponds to a line in the atomic spectrum. There is nothing between each line, so the spectrum is discontinuous.

What are the reasons for a finite line width of any spectral peak?

The natural linewidth arises because excited states have a finite lifetime. Collisions randomize the phase of the emitted radiation. If frequent enough they (effectively) shorten the lifetime further.

What is the cause of spectral lines?

Spectral lines are gaps in the ordinarily continuous distribution of frequency in light. They result when emitted light is partially absorbed by matter, usually a gas. One type of spectral line is an absorption line, which is caused when some frequencies of light are absorbed from emitted radiation.

Why are numerous spectral line produced?

We get different series of spectral lines due to the transition of the electron from different outer orbits to fixed inner orbit. Energy level diagrams indicate us the different series of lines observed in a spectrum of the hydrogen atom. The horizontal lines of the diagram indicate different energy levels.

How do atoms produce spectral lines?

Spectral lines are the result of interaction between a quantum system (usually atoms, but sometimes molecules or atomic nuclei) and a single photon. When a photon has about the right amount of energy to allow a change in the energy state of the system (in the case of an atom this is usually an electron changing…

What is intensity and intensity of spectral lines?

The intensity of a spectral line at a given frequency is related to the net rate of absorption (or emission) at that frequency. The third process which occurs is totally independent of the intensity or frequency of any radiation that is present.