There are two main processes that do this. Fusion and fission.
Fusion is when atoms combine to make a different atom and release energy.
Fission is when an atom splits into smaller parts or atoms that are different and releases energy.
These are the two basic processes that produce nuclear energy.
When a sodium atom is heated and gives off a line spectrum, the outermost electron absorbs energy and gets excited to a higher energy level. As the electron returns to its original energy level, it releases this energy in the form of light, creating the characteristic line spectrum of sodium.
When an electron in an atom moves from a higher energy state to a lower energy state, it releases a photon of light with energy equal to the energy difference between the two states. This process is known as emission of light or photon emission.
The energy produced by fission of a uranium atom is millions of times greater than that produced by a carbon atom. Uranium fission releases a large amount of energy due to its high nuclear binding energy per nucleon, whereas carbon fission releases only a fraction of that energy. This difference in energy release is the basis for the use of uranium in nuclear power plants.
The energy needed to form positive ions during ionic bonding comes from the transfer of electrons between atoms. When an atom loses one or more electrons to become a positive ion, it releases energy. This energy is derived from the electrostatic attraction between the positively charged nucleus of one atom and the negatively charged electrons of another atom.
The energy is absorbed by the electrons because work needs to be done on the electrons to raise them to an excited state. Energy is stored in the electrons while they are in their excited state and would emit energy if they returned to their ground state.
It is called nuclear fission, where a nucleus of an atom splits into two or more smaller nuclei, releasing energy in the process.
When a sodium atom is heated and gives off a line spectrum, the outermost electron absorbs energy and gets excited to a higher energy level. As the electron returns to its original energy level, it releases this energy in the form of light, creating the characteristic line spectrum of sodium.
Fission releases energy by splitting the nucleus of an atom into smaller parts, which releases a large amount of energy in the form of heat and radiation.
When an electron releases energy, it can move to a lower energy level or transition to a different orbital within an atom. This movement can involve emitting a photon of light or transferring energy to another particle through collision. The electron does not move in a traditional sense like a particle traveling through space but rather changes its energy state within the atom.
You rip apart an atom which releases great energy in the form of heat. The energy causes water to evaporate which turns a turbine. The turning turbine creates electricity. This is how a nuclear reactor works.
The atomic change that produces the largest amount of energy is a nuclear atomic change. This is when an atom is hit with another elementary particles and releases a large amount of energy.
When an atom releases energy in the form of visible wavelengths of light, it indicates that an electron in that atom has gone from an excited energy level, back down to a lower energy level.
When an electron in an atom moves from a higher energy state to a lower energy state, it releases a photon of light with energy equal to the energy difference between the two states. This process is known as emission of light or photon emission.
When an elctron is excited (has energy) it is extremely unstable, so it falls back to its previous energy level, and when it does this it releases energy, and this energy is viewed as wavelengths of light. So the color depends on the amount of energy the atom releases when it falls back to its lower energy level.
The energy produced by fission of a uranium atom is millions of times greater than that produced by a carbon atom. Uranium fission releases a large amount of energy due to its high nuclear binding energy per nucleon, whereas carbon fission releases only a fraction of that energy. This difference in energy release is the basis for the use of uranium in nuclear power plants.
There is actually no certain 'part' of the atom that gives off light. As you know, light is made out of photons. Photons are given off by the atom when it releases energy to get rid of the energy. I hope this helps!
When an atom returns to the ground state, it releases the excess energy in the form of light. This process is known as emission of photons. The energy of the emitted photon is determined by the difference in energy levels between the initial and final states of the atom.