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An electron has dropped from a higher energy state to a lower one. The photon emitted has precisely the same energy as was lost by the electron.
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What is the value of n for the level in which the electron originated is an electron in a hydrogen atom relaxes to the 4 level emitting a light of 114 tetra Hz?
6
An excited atom can lose energy by?
*Capturing an orbiting electron *Emitting a positron So C both of the above
When an iodine 131 atom decays by emitting a beta particle and a gamma particle it forms?
expon 131
What radioactive atoms spontaneously do?
Depending on the type of atom, a radioactive atom will decay by emitting an alpha particle (helium nucleus), proton, neutron, electron, or will split apart completely.
How does an excited atom get to a ground state?
For example, by the absorption of a photon.
What is the energy change that occurs when an atom gains electrons called?
The energy change that occurs when an atom gains electrons is called the
Do atom or molecules change identity when a change of state occurs?
yes
Sketch an atom emitting light. Does the electron end up in a higher or lower orbit. Repeat for an atom absorbing light?
When an atom emits light an electron has fallen from a higher orbit to a lower orbit. The amount of energy the emitted photon has will equal the energy difference between the initial and final orbits.
How do you generate light?
Light is generated when photons are emitted from an atom. This occurs when an electron on one energy level of an atom falls to a lower energy level.
What is the value of n for the level in which the electron originated is an electron in a hydrogen atom relaxes to the 4 level emitting a light of 114 tetra Hz?
6
What is the energy change that occurs when an atom loses electrons called?
ionization energy
What is the equation for the transmutation that occurs when an alpha particle combines with an oxygen- 16 atom emitting a proton?
O-16 + He-4 ---> F-19 + H-1 Hence fluorine nucleus is produced.
An excited atom can lose energy by?
*Capturing an orbiting electron *Emitting a positron So C both of the above
The lines in the bright line spectrum of an atom are due to what?
The atomic line spectrum comes from the emission of atoms of different elements that are in an excited state. Each element has its own unique atomic emission spectrum.
Can light be bent or refracted when it hits a new material at a angle?
Light can only be bent by gravity, therefore, refraction occurs when light hits an atom's electron and is scattered in a different direction.
What is the change in atomic number when an atom emits a positron?
Emitting a positron, turns a proton into a neutron. So the atomic number goes down by 1, while the mass number remains the same.
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.
