![]() If the lines are not present, that element is not part of the mixture. Line spectra is a phenomenon which occurs when excited atoms emit light of certain wavelengths which correspond to different colours The emitted light can. Line up the lines to identify the unknown elements. Is can be used to identify an element in mixtures. Since each element has different numbers of protons, neutrons and most importantly electrons, the emission spectrum for each element is different. #LINE SPECTRA SERIES#This series is referred to as the Lyman Series.įurther the electron falls, the more energy it releases. This series is called the Balmer series.Įlectron falls to the 1st energy level, the light given off is t=in the Is in the visible region of the spectrum and spectral line of color are Series of electron transitions is referred to as the Paschen series.Įlectron falls to the 2nd energy principal energy level, the light given off Level, the light given off is in the infrared region of the spectrum. The intensities of these lines represent quantitative estimates of relative line strengths that take into account varying detection sensitivity at different wavelengths. Hydrogen atom, if the electron falls to the 3rd energy principal energy A large number of the lines for neutral and singly ionized atoms were extracted from the National Bureau of Standards (NBS) Tables of Spectral Line Intensities (Ref. These lines can tell us how many energy levels an atom has and how far away they. It is when they return to the ground state energy is given off.īut electrons don't have to go directly there. The lines in spectra are caused by electrons moving in between energy levels. Ground state (lowest energy configuration)Įxcited State (higher energy configuration)Ģ-6-1 **Note the # of electrons are the same This is not the cause of the spectral lines. "Excite electrons fall back to lower energy levels releasing energy in the form of light."Įxciting an electron promotes it to a higher sublevel of energy level. Lines Spectra and Excited Electron States ![]()
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