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We are able to identify different elements through spectroscopy analysis due to the fact that all elements emit different wavelengths of light. If we look at the wavelengths emitted from some element we can see spectral lines at these wavelengths which are unique to the element and we can identify which element it is based on this.
Spectroscopic analysis of light given off by excited atoms shows only photons of particular energy (v) are given off. The energy of the photon coming in corresponds to the difference in energy levels. You use the results of the light experiment to figure out what the structure is of your sample. Thus, you can be able to identify elements.
All elements emit a different wavelength. Analysis of a specific wavelength can help identify the element because each element because the specific wavelength might only correspond to one specific element. For example, hydrogen has three lines with wavelengths of 434 nm, 486 nm, and 656 nm.
So each element has different amount of varying orbital energy levels. Hydrogen's orbital energy levels are different from Oxygen's and when electrons transition from one orbital energy to another, depending on the element, the release of energy is different. The releases of energy are in the form of photons that produce light. Therefore, each element's atomic spectra is different since each element has varying levels of "energy jumps".
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