0
It's atomic number decreases by 2 (because it has lost two protons) but as an alpha particle is two protons and two neutrons the Atomic Mass decreases by 4.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
The radioactive emission that has the greatest penetrating power is?
Gamma, i.e. photon emitted from the nucleus, has the highest penetrating power.
If cobalt-60 emits a gamma ray what is the product?
Cobalt-60
What is released from the nucleus during gamma decay?
Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.Alpha decay means that an alpha particle (helium-4 nucleus) is emitted.
What are three kinds of radioactivity?
The three major types of radioactivity are: # Alpha Radiation Alpha radiation consists of a stream of positively charged particles, called alpha particles, which have an atomic mass of 4 and a charge of +2 (a helium nucleus). When an alpha particle is ejected from a nucleus, the mass number of the nucleus decreases by four units and the atomic number decreases by two units. For example: 23892U -> 42He + 23490Th The helium nucleus is the alpha particle. # Beta Radiation Beta radiation is a stream of electrons, called beta particles. When a beta particle is ejected, a neutron in the nucleus is converted to a proton, so the mass number of the nucleus is unchanged, but the atomic number increases by one unit. For example: 23490 -> 0-1e + 23491Pa The electron is the beta particle. # Gamma Radiation Gamma rays are high-energy photons with a very short wavelength (0.0005 to 0.1 nm). The emission of gamma radiation results from an energy change within the atomic nucleus. Gamma emission changes neither the atomic number nor the atomic mass. Alpha and beta emission are often accompanied by gamma emission, as an excited nucleus drops to a lower and more stable energy state. Alpha, beta, and gamma radiation also accompany induced radioactivity. Radioactive isotopes are prepared in the lab using bombardment reactions to convert a stable nucleus into one which is radioactive. Positron (particle with the same mass as an electron, but a charge of +1 instead of -1) emission isn't observed in natural radioactivity, but it is a common mode of decay in induced radioactivity. Bombardment reactions can be used to produce very heavy elements, including many which don't occur in nature.Submitted by kuasimodo
Which form of radioactive decay consists of photons?
Gamma rays.
What happens to a radioactive nucleus when it emits is gamma particle?
it becomes stable.
What do you mean by radioactive?
An element that has an unstable nucleus and therefore emits alpha, beta and/or gamma radiation.
What do you mean by radioactive element?
An element that has an unstable nucleus and therefore emits alpha, beta and/or gamma radiation.
What happens when strong forces are not sufficient enough to hold an unstable nuclei together?
Such an element is radioactive and to stabilised itself its nucleus emits the alpha and beta particles along with gamma rays till it is converted into a stable nucleus.
Which form of radioactive decay emits only energy?
Gamma
What effect does losing a gamma ray have on the nucleus?
Nothing, if the nucleus emits a gamma-ray it means something has happened to it already.
How is the nucleus affected in gamma decay?
When the nucleus emits an alpha or beta particle, it is in the exited state. To return to the ground state, it has to emit energy. It emits this energy in the form of gamma rays. There is no change in the atomic no or the mass no when it emits gamma rays, but it does decrease the energy in the nucleus when gamma rays are emitted
What features of radioactive elements make them behave the way they do?
They have a heavy nucleus. Hence it is unstable. Hence it emits radiation in the form of alpha and beta particles to form lighter elements. After emitting these particles, it is in an exited state. It emits gamma radiation to return to its ground state
Why we find alpha beta and gamma rays in many radioactive elements?
That's what an atom emits when it decays.
How do the mass number and charge of a nucleus change when it emits a gamma ray?
Neither changes. A gamma ray is just energy, and the nucleus simply transitions to a lower energy state.
The radioactive emission that has the greatest penetrating power is?
Gamma, i.e. photon emitted from the nucleus, has the highest penetrating power.
When a radioactive nucleus gives off a gamma ray it's atomic number increases by?
Emission of a gamma ray does not change the atomic number of the atom. A gamma ray is a photon, and has no mass. The atom's mass is reduced by the conversion of a tiny amount of mass into the energy of the gamma ray. This changes neither the number of protons nor the number of neutrons. It is done by rearranging the nucleons, changing the state of excitation of the nucleus. An example is when 99mTc emits a gamma ray and changes to 99Tc.
