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Emission vs absorption spectra6/22/2023 The energy for each transition varies depending on the attractive forces between the electron and the nucleus, despite the fact that the movement is essentially the same.ĭifferences Between Acceleration and Velocity When an electron goes from a higher to a lower orbital, it releases a quanta of energy, which is called the emission spectrum. All of these shells are about in the same location. Ques: Why is the emission spectrum of each element different?Īns: The electrons are contained in a series of ‘shells' in each element. Because electron transitions can only occur at discrete energies predicted by quantum physics, you don't get photons of all wavelengths, only those with the specified frequency. Thermal radiation, such as that emitted by a black body, is commonly represented by continuous spectra.Ī line spectrum is a recording of light emitted by excited atoms as their electrons return to lower energy levels. Typically, the majority of the light will have come from the same source. Ques: What is the difference between a continuous spectrum and a line spectrum?Īns: A continuous spectrum is a record made by capturing all wavelengths of light flowing through space at the same time. The energy change is calculated using the formula delta E=hc / wavelength.ĭifference Between An Atom And A Moleculeĭifference Between Molar mass and Molecular mass Some energy is absorbed and some are ejected as an electron goes from a lower to a higher energy level. The electrons travel inset circular routes around the nucleus, known as energy levels or shells. Ques: How can the Bohr model of the atom explain the atomic spectra's fixed color lines?Īns: He was sure that the atom could be visualized as a little positive nucleus surrounded by electrons. Colored lines appear against a black background in the emission. Because the energy levels are quantized, the spectrum for this transition is made up of lines. In the emission spectrum, when an excited electron goes to a lower energy level, it emits a certain amount of energy in the form of photons. Continuous spectra are produced by solids at high temperatures, such as the filament of electric light. Ques: What are the differences between the continuous spectrum and the emission spectrum?Īns: A continuous spectrum is one with no gaps in wavelengths over a wide range.
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