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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.
Why do elements go from ground state to excited state?
Elements go from the ground state to the excited state if some form of energy is supplied. Otherwise, they stay in the ground state.
What is the source of energy for excited electrons?
There are several opportunities to excite electrons within an atom or a molecule. The energies to excite a single electron in an atom start at roughly 10-19J, which is approximately the energy of red light. Though, electrons can also be excited by any energies above roughly 10-25J (radar waves), dependent on the material. This also includes thermal excitation. For example, any material that glows does emit light, which is caused by excited electrons that fall back into a non-excited state. However, the usual source of energy used to excite electrons is electromagnetic radiation between 200 and 700 nm, which is ultraviolet and visible light. This is the predominant energy range that excites electrons in atoms and molecules without splitting the electrons apart of those. Thus, the colour of materials is (amongst other things) a result of the electron excitation, caused by partial absorption of light. (Please also follow the provided links for more details.)
How electrons can stay in the metastable state for longer time?
To leave a state and decay to a lower energy state, the electron must lose energy. In metastable states, there are no lower energy state to go to that have strongly allowed transitions (that is simple emission of a photon, diplole transititions) and so the electron must decay by slower, less probable means (like two photon decay, magnetic dipole decay). Hence, it stays in that state for longer.
What does it mean to say that an atom is an exited state?
When an atom is in an excited state, it means that its electrons have absorbed energy and moved to higher energy levels. This can happen through processes like absorbing light or collisions with other particles. The electrons do not stay in this state indefinitely and eventually return to their original, lower energy levels by releasing the absorbed energy in the form of photons.
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.
What is the definition of Metastable state in laser?
In lasers, a metastable state is a state in which atoms or molecules are in an excited state with a longer-than-normal lifetime before emitting a photon and returning to a lower energy state. This allows for the accumulation of a population inversion necessary for laser action.
Why do elements go from ground state to excited state?
Elements go from the ground state to the excited state if some form of energy is supplied. Otherwise, they stay in the ground state.
What happens when an electron moves from the excited state to the ground state?
when an electron moves from excited state to ground state it emits photons of wavelength equal to the difference between the two energy levels. Consider a hydrogen atom. If the electron is at the second energy level in the atom (the energy of this level is -3.4 eV )it can stay there for about only 10^-8 s and then after that it just to the level below .If it jumps from second to ground state (energy of ground state is -13.6 eV) it emits aphoton of energy = 13.6-3.4 =10.2 eV. .............................Gho$t
What is the source of energy for excited electrons?
There are several opportunities to excite electrons within an atom or a molecule. The energies to excite a single electron in an atom start at roughly 10-19J, which is approximately the energy of red light. Though, electrons can also be excited by any energies above roughly 10-25J (radar waves), dependent on the material. This also includes thermal excitation. For example, any material that glows does emit light, which is caused by excited electrons that fall back into a non-excited state. However, the usual source of energy used to excite electrons is electromagnetic radiation between 200 and 700 nm, which is ultraviolet and visible light. This is the predominant energy range that excites electrons in atoms and molecules without splitting the electrons apart of those. Thus, the colour of materials is (amongst other things) a result of the electron excitation, caused by partial absorption of light. (Please also follow the provided links for more details.)
How long does a DUI conviction stay on your record in the state of Colorado?
how long does a DUI conviction stay on your record in the state of Colorado
How long does a violation stay on your driving record in Maine?
How long violations stay on your record varies from state to state. In Maine, a violation will stay on your driving record for one year.
A ground-state H atom absorbs a photon of wavelength 94.91 nm and its electron attains a higher energy level?
This will result in the hydrogen atom being in an excited state. The electron must absorb enough energy from the photon to make it into the next energy level. An electron cannot stay 'in between' energy levels. The amount of energy in a photon is given by: E = h*c/lambda [c = speed of light = 3 x 108 m/s; lambda = wavelength in meters; and h = Plancks constant = 4.14 x 10-15 eV*s {eV - electron volt is a unit of energy}] With lambda = 94.91 nm = 94.91 x 10-9 meters; we have E = 13.09 eV From the chart of hydrogen energy levels: 1 -13.61eV 2 -3.4eV 3 -1.51eV 4 -0.85eV 5 -0.54eV it looks like 13.09 eV will be enough to take the electron from level 1 (ground state) up to level 5, but no farther. The exited atom will not stay excited for long and as the electron falls back to it's normal state, it gives off a photon with corresponding energy. I think hydrogen will just go straight back to level 1, but some elements, the electron can jump from level 5 to 4, then 4 to 3, etc. giving off multiple photons with corresponding energy for each photon. See related links.
How long can someone stay in high school in new york state?
How long can a person stay in high school
How electrons can stay in the metastable state for longer time?
To leave a state and decay to a lower energy state, the electron must lose energy. In metastable states, there are no lower energy state to go to that have strongly allowed transitions (that is simple emission of a photon, diplole transititions) and so the electron must decay by slower, less probable means (like two photon decay, magnetic dipole decay). Hence, it stays in that state for longer.
Is Scout excited when she finds out Aunt Alexandra is going to stay?
no
How long does a misdeminor stay on your record in Washington state?
5 Years
