There are two different kinds of beta decay, negative and positive.
In negative beta decay, a neutron in the nucleus emits an electron and an electron antineutrino, becoming a proton in the process. This increases the atomic number of the atom by one, but it decreases the mass because the only thing really lost is the electron antineutrino.
In positive beta decay, a proton in the nucleus receives energy from outside the atom to convert into a neutron, a positron and a neutrino. This increases the mass of the atom by converting the energy from outside the atom into mass within it.
Atomic number actually changes during either form of beta decay. It may go up or down by one. Use the link below to the related question to review the nature of beta decay and see why.
There are two types of beta decay: beta-minus and beta-plus
Let's consider this beta-minus decay reaction:
A ----> B + beta-minus
Here, the mass numbers of A and B are the same. B has one more proton than A, but one less neutron.
Now this is a beta-plus decay:
A ----> B + beta-plus
Here, the mass numbers of A and B are the same again. But B has one more neutron than A, but one less proton.
The nucleus of an atom changes after beta decay in the sense that it essentially loses one electron. Other than that, however, it remains largely the same.
Because a neutron became a proton. The atomic number is the total number of protons in the nucleus.
increases by 1, trivial change in mass
Transmutation, which is the change of atoms from one element to another.
The atomic nucleus can emit beta particles (beta radiation). A neutron emits a beta particle when it decays into a proton, and anti-neutrino, and an electron (which becomes the beta particle).
Commonly the parent nuclide decays by the beta emission. In addition to that; inside the nuclei decay chain will consistently have half-lives!
Lead-210 decays by alpha or beta decay. The equation for the alpha decay of 210Pb is: 82210Pb --> 80206Hg + 24He representing the alpha particle as a helium nucleus. The equation for the beta decay of 210Pb is: 82210Pb --> 83210Bi + -10e where the -10e is an electron.
It is in beta plus decay that we see the positron emitted from the nucleus. (An electron is emitted in beta minus decay.) Within the nucleus of an unstable atom, a proton transforms into a neutron, and a positron is ejected from the nucleus (along with a neutrino). As the nucleus now has one more proton than it did before, its atomic number just went up by one; it is another element.
The atomic number increases by one unit when a beta decay occurs.
kutta panna
Beta decay results in either an increase or decrease in the number of protons, which results in a change in the nuclear charge and produces an atom of a different element.
I think you may be referring to Beta decay of a radioactive substance. Beta decay involves the emission of an electron and an electron antineutrino from the nucleus of an atom as a neutron is converted into a proton
A beta particle is either an electron or a positron emitted by an atomic nucleus in beta decay, which is a type of radioactive decay. The phenomenon of beta decay involves a change within the atomic nucleus of an atom. One of two reactions may occur, and they involve the change of a neutron into a proton, or a proton into a neutron. When a neutron changes into a proton, we call that beta minus decay. The change of a proton into a neutron is called beta plus decay. In beta minus decay, an electron is ejected from the nucleus, and in beta plus decay, a positron is ejected from the nucleus.Use the links below to related questions and articles.
There is a difference between beta emitters and beta particles. In situations where an atomic nucleus exhibits nuclear instability due to too many neutrons for the number of protons or vice versa, that nucleus may undergo beta decay. It the decay event occurs, that atom is considered a beta emitter. The emitted particle is the beta particle. That's the difference. (There are two different beta particles, so check the articles on beta decay to get the scoop.)
Transmutation, which is the change of atoms from one element to another.
The atomic number increases by one unit when a beta decay occurs.
beta particle In beta decay a neutron is converted into a proton, electron (also called a beta particle) and an electron antineutrino.
The atomic nucleus can emit beta particles (beta radiation). A neutron emits a beta particle when it decays into a proton, and anti-neutrino, and an electron (which becomes the beta particle).
There are no positrons in the nucleus of any atom. Positrons are anti-electrons; they are antimatter. They could be said to be the antimatter equivalent of the electron, and, as such, they would be present around the nucleus of an antimatter atom as the electrons are present around the nucleus of a "regular" atom. Positrons can be produced in atomic nuclei by some kinds of radioactive decay, and they can be observed to be leaving a nuclear reaction called beta plus decay. But the positron leaves the nucleus of an atom as soon as it is created. It does not (cannot) exist in the nucleus of an atom.
Alpha decay decreases the atomic number by two. Beta- decay increases the atomic number by one. Beta+ decay decreases the atomic number by one. Gamma decay does not change the atomic number. However, gamma decay is often incidental to a precipitating alpha or beta event that upsets the energy equilibrium in the nucleus, so the two are not unrelated.