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A spectral line is a weaker or stronger region in an otherwise uniform and continuous spectrum. It may result from emission or absorption of light in a narrow frequency range, compared with the nearby frequencies. Spectral lines are often used to identify atoms and molecules.
Spectroscopists customarily refer to the spectrum arising from a given ionization state of a given element by the element's symbol followed by a Roman numeral.The numeral I is used for spectral lines associated with the neutral element, II for those from the first ionization state, III for those from the second ionization state, and so on. [1]
Moseley's periodic law, concerning the modern periodic table. Auger electron spectroscopy, a similar phenomenon with increased X-ray yield from species of higher atomic number. Discovery of the neutron Mosley's law was an important step in the development of the understanding of the atom.
The spectrum appears in a series of lines called the line spectrum. This line spectrum is called an atomic spectrum when it originates from an atom in elemental form. Each element has a different atomic spectrum. The production of line spectra by the atoms of an element indicate that an atom can radiate only a certain amount of energy.
Spectral line shape or spectral line profile describes the form of an electromagnetic spectrum in the vicinity of a spectral line – a region of stronger or weaker intensity in the spectrum. Ideal line shapes include Lorentzian , Gaussian and Voigt functions, whose parameters are the line position, maximum height and half-width. [ 1 ]
Spectral lines of indium: ... It is a member of group 13 on the periodic table and its properties are mostly intermediate between its vertical neighbors gallium and ...
The definitive visualisation of all 118 elements is the periodic table of the ... the blue color named after India and observed in its spectral lines 13 5 p-block 114 ...
In the notation of the periodic table, the main shells of electrons are labeled: ... Observations of the interstellar medium reveal atomic hydrogen spectral lines ...
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