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What form of energy emission accompanies the return of an excited electron to its ground state?
What form of energy emission accompanies the return of excited electrons to the ground state?
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When an electron in an atom moves from a lower energy state to a higher state?
The electron absorbs energy and moves to a higher energy level. This process is known as excitation. The electron can then release the absorbed energy by emitting a photon and returning to a lower energy state.
Why do atoms emit only certain wavelengths of light?
The electrons in an atom's "electron shell" all have specific energy levels. If you add energy to an atom, the atom will absorb a specific amount of energy, and the electron will jump up to a higher energy level. Each different element has its own energy levels, and it can only absorb energy in specific amounts. (When you add a lot of energy to the atom, the atom becomes ionized, as one or more electrons absorb enough energy to break free of the atom completely, leaving the atom with an unbalanced positive electrical charge.) When those "excited" or jumped-up electrons release the energy, the electron drops back to its previous level, and the atom (or more specifically, the electron) emits a photon, which is a particle of light. Each photon has a frequency or energy that is distinctive to the element and the energy level. Electrons cannot have intermediate energies; they absorb and release exact "packets" or "quanta" of energy. This is how a mass spectrometer works; the operator ionizes a sample of the material that he wants to analyze, and watches the resulting spectrum. Each wavelength of light emitted by the sample corresponds to one specific element.
What is the difference between emission and absorption?
Emission is the process where an object releases energy (such as light) while absorption is the process where an object takes in energy (such as light). In emission, energy is being emitted from the object, whereas in absorption, energy is being absorbed by the object.
The line emission spectrum of an atom is caused by the energies released when electrons?
The line emission spectrum of an atom is caused by the energies released when electrons fall from high energy level. It goes down to a low energy level and the extra energy it had from higher level is released as light.
When light strikes electrons.do the electrons reflect the light back?
Not quite. Remember that electrons are part particles and part waves. Light is given off when an electron drops from one energy state to a lower one. In answer to a different question, and may be the one you ask, When light strikes a phosphor, the electrons in the phosphor absorb energy, and give it off some time later. This is Phosphorescence.
What event accompanies energy absorption by chlorophyll?
An electron is excited
Energy can be released from a pigment with an excited electron by what method?
Energy can be released from a pigment with an excited electron through the emission of light, a process known as fluorescence. When an electron returns to its ground state from an excited state, the energy difference is released as light energy.
Emissin of light from an atom occurs when an electron what?
Lots of wrong answers out there, tested this on school, the answer is: Drops from a higher to a lower energy level
What is the excited state of phosphorus?
The excited state of phosphorus occurs when an electron is promoted to a higher energy level within its electron configuration. This results in phosphorus having more energy than in its ground state, which can lead to the emission of light or other forms of energy when the electron returns to its original energy level.
If an electron has absorbed energy and has shifted to a higher energy level the electron is said to be what?
This electron is called excited.
What event accompanies energy absorption by chlorophyll or other pigment molecules of the antenna complex?
The event that accompanies energy absorption by chlorophyll or other pigment molecules of the antenna complex is the excitation of electrons. When light energy is absorbed by the pigment molecules, their electrons get excited to a higher energy state. This excited state is essential for the subsequent transfer of energy to the reaction center of the photosystem for further processing.
What is the emission of light by excited state atom?
The emission of light by an excited state atom occurs when an electron transitions from a higher energy level back to a lower energy level. As the electron loses energy during this transition, it releases a photon, which is a particle of light. The energy (and thus the wavelength) of the emitted photon corresponds to the difference between the two energy levels. This process is fundamental to phenomena such as fluorescence and is the basis for various applications in spectroscopy and lasers.
What does the change of an atom from an excited state to the ground state always require?
An atom emits a photon (particle of light) when transitioning from a ground state to its excited state. To obey conservation of energy, the energy gained by the atom when an electron moves to a lower energy level is equal to the energy it loses in emitting the photon. (The energy of a photon is E = hf, where E is the energy, h is Planck's constant, and f is the frequency of the photon.) Conversely, when an atom absorbs a photon (as is the case in absorption spectra), the electron absorbing the photon moves to a higher energy level.
Why does excited hydrogen atoms always produce the same line emission spectrum?
Excited hydrogen atoms produce the same line emission spectrum because they have specific energy levels associated with their electron transitions. When an electron falls from a higher energy level to a lower one, it emits a photon with a specific energy, corresponding to a specific wavelength of light. This results in the characteristic line emission spectrum of hydrogen.
Can an electron stay in an excited state without outside energy?
No, an electron cannot remain in an excited state without additional energy input. Excited states are temporary and the electron will eventually return to its ground state, releasing the energy it absorbed as photons.
Does an excited electron move up or down an energy level?
The excited electron move up.
When an electron gets excited is energy released or absorbed?
When an electron gets excited, energy is absorbed to move the electron to a higher energy level. This absorbed energy gets released when the electron returns to its original energy level, emitting electromagnetic radiation such as light.
