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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.

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14y ago
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13y ago

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.

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13y ago

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.

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10y ago

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.

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12y ago

Because a neutron became a proton. The atomic number is the total number of protons in the nucleus.

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13y ago

increases by 1, trivial change in mass

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Q: How does the nucleus of an atom change after beta decay?
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Related questions

How does a nucleus change when beta decay of the nucleus occurs?

The atomic number increases by one unit when a beta decay occurs.


In beta decay what happens within the nucleus of the atom?

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Which changes in beta decay mass number or the charge of the nucleus?

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.


How electron created from nucleus?

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


What are beta particles?

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.


Are beta emission and beta decay the same?

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.)


Alpha decay and beta decay are two forms of decay that cause transmutation?

Transmutation, which is the change of atoms from one element to another.


How does the atomic number of a nucleus change when beta decay occurs?

The atomic number increases by one unit when a beta decay occurs.


What is a high energy electron from the nucleus called?

beta particle In beta decay a neutron is converted into a proton, electron (also called a beta particle) and an electron antineutrino.


Which particle is associated with beta decay?

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).


Is there a positron in the nucleus of an atom?

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.


How is the atomic number of a nucleus change is it by alpha decay or beta decay or gamma decay?

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.