What do you call a atom that decays?
An atom whose nucleus decays over time is called radioactive. Some examples of radioactive substances are uranium, plutonium, and einsteinium.
An excited atom decays to its ground state and emits a photon of green light if instead the atom decays to an intermediate state then what color light is emitted?
An excited atom decays to it's ground state and emits a proton of green light if instead the atom decays to an intermediate state what could the light emitted be?
If an atom that emits a green proton when it decays to its ground state decays to an intermediate state instead it will emit a proton that is yellow/orange/red. The reason is that it will be a lower energy proton emitted and lower energy waves correspond to longer wavelengths like the ones that make up these colors.
An atom decays to its ground state and emits a photon of green light if the atom decays to an intermediate state what light would be emitted?
Though the electron itself is not present in the nucleus of an atom, the elementary particles that make up the electron are present inside the neutron. In other words, a neutron is made up of an electron and a proton. How do we know this? Because when a neutron decays, it slowly decays into a proton and an electron. It's a cycle.
Really, it is the whole thing. An atom decays because the nucleus is unstable. The nucleus contains protons and neutrons, and only certain combinations of the numbers of each are stable. When a radioactive atom decays, it can do a number of different things. Best known by ordinary people, possibly, is nuclear fission, in which the whole atom breaks apart to become two atoms. In the process various pieces of the atom also are released…
Why does an atom that decays by emitting alpha or beta radiation become an atom of a different element?
Alpha radiation is when the nucleus of an unstable element releases an alpha particle (two protons and two neutrons; the equivalent of the nucleus of a helium atom)due to the weak nuclear force. The resulting atom is now a different element because the number of protons it has determines which element it is. Beta radiation (β− ) is when a neutron in an unstable atom with an excess of neutrons turns into a proton because…
When a radioactive tracer is used why is it best to use a radioactive isotope that decays into a stable isotope?
Well...they DON'T use that kind of isotope. They use an isotope (Technetium-99) which decays into the slowly-decaying radioisotope Technetium-98...and they use this because, with a medically-useful half-life of a little over six hours, the patient is exposed to radiation for only as long as he or she needs to be.