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What wavelength of photons is required to excite the ground state electron of H atom to 4th excited state?
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Why are the photons that emerge from the Sun's surface visible-light photons and infrared-light photons rather than gamma-ray photons?
Photons do not come in different types like infared-photons etc. they are just the wavelength that the photons are at and nuclear fusion just happens to emit photons at a particular wavelength
Why there are discontinous spaces between spectrum of hydrogen?
There are spaces in the atomic spectrum of hydrogen because there are discrete energy levels that the electron in the hydrogen atom can be located in. Generally speaking the further away from the nucleus, the higher the potential energy of the electron. When hydrogen gas is excited, the electron can jump up to higher energy levels. When that electron falls back down to a lower energy level, a photon is emitted with an energy equal to the energy difference between the atomic orbital it jumped from and the one it jumped to. Since excited electrons can make a number of different jumps (ex. 4->3, 4->2, 5->3, 5->2, etc) there are a series of photons given off with discrete energies. Each one of these photons has a distinct wavelength (given by the equation E=hf, where E is the energy of the photon, h is planck's constant and f is the frequency of the photon). Each line you see on the spectrum is a photon produced from a different energy jump, with a different wavelength. We are only able to see the photons that emit a wavelength in the visible spectrum (roughly 400-700 nm).
What causes photons to be emitted from excited atoms?
The energy difference, between two energy levels, is emitted as a photon, when the electron "falls down" to a lower energy level.
How does an excited atom go back to it's ground state?
It must omit a photon of light to lower the excited electron to a lower state. It may require multiple emissions to lower one electron multiple steps or multiple emissions to lower multiple excited electrons. (Incidentally this is why we see a blue sky - excited O2 molecules are emitting blue photons to get back to a ground state)
How does a nucleus get rid of extra energy after beta decay?
It emits photons of varying energy, energy representing the amount of energy required to step down from the nucleus' excited state to either the ground state or to an intermediate state. These photons are called gamma rays.
What causes an electron to go from a ground state to excited state?
Typically, an electron goes into an excited state when a photon (a particle of light) with just the right wavelength strikes it. For most molecules, these photons are in the Ultraviolet / Visible light spectrum.
Energy can be released from a pigment with an excited electron by what method?
by emiting photons
How does a plant frow in artificial lighting?
Same way it grows in sunlight. Photons of light at the right wavelength impact the pigment chlorophyll, excite and electron from the pigment which then enters photosystem II. Photons of the correct wave length are photons of the correct wavelength and the plant does not care what the source is of these photons.
How does food dye work?
Food dyeing works on a molecular level within food. The food coloring dye absorbs a photon, the electrons withinÊget excited, use up the photons energy, the electron releases the photonsÊenergy asÊthermal energy, and it is released on another wavelength of light.Ê
Photons with the highest energy have?
highest frequency / shortest wavelength / same speed as all other photons.
Why are the photons that emerge from the Sun's surface visible-light photons and infrared-light photons rather than gamma-ray photons?
Photons do not come in different types like infared-photons etc. they are just the wavelength that the photons are at and nuclear fusion just happens to emit photons at a particular wavelength
What is the longest wavelength photon?
There is no longest wavelength for photons. It can be arbitrarily long.
When excited electrons return to lower energy levels what is released?
Energy is emitted when an electron moves from a higher energy level to a lower energy level.
What color is electricity?
Colorless ElectricityElectricity itself doesn't have a color. It a voltage and current created by magnets and coils. Electricity is a Electron potential (voltage - V) and/or Electron flow (current - I). Every thing out there is made out of Atoms, where the outside of any Atom is Electrons. When Electrons flow through a medium, it causes energy to be released by those Atoms in the medium, and some energy is lost from the Electrons. This is Electric Resistance (R). This energy is released as Photons [not Protons]. Photons are the light, Electromagnetic waves, the conjugate of Electrons. Photons are perpendicular to Electrons and have a wavelength. Photons have a colour and some Photons can be seen, if their wavelength is within the human vision. The wavelength of the Photons released depends on the Energy lost by the Electrons in flowing through that medium and the various characteristics of the atoms of the medium.
Why there are discontinous spaces between spectrum of hydrogen?
There are spaces in the atomic spectrum of hydrogen because there are discrete energy levels that the electron in the hydrogen atom can be located in. Generally speaking the further away from the nucleus, the higher the potential energy of the electron. When hydrogen gas is excited, the electron can jump up to higher energy levels. When that electron falls back down to a lower energy level, a photon is emitted with an energy equal to the energy difference between the atomic orbital it jumped from and the one it jumped to. Since excited electrons can make a number of different jumps (ex. 4->3, 4->2, 5->3, 5->2, etc) there are a series of photons given off with discrete energies. Each one of these photons has a distinct wavelength (given by the equation E=hf, where E is the energy of the photon, h is planck's constant and f is the frequency of the photon). Each line you see on the spectrum is a photon produced from a different energy jump, with a different wavelength. We are only able to see the photons that emit a wavelength in the visible spectrum (roughly 400-700 nm).
What causes photons to be emitted from excited atoms?
The energy difference, between two energy levels, is emitted as a photon, when the electron "falls down" to a lower energy level.
The color of light is determined by its?
Wavelength, or alternatively its frequency.
