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What changes take place in the nucleus when a beta particle is emitted?
Wiki User
∙ 12y ago
Answer: It depends on the type of beta decay. There are two types of beta radiation: beta minus and beta plus. (In both cases, the mass number is not affected.)
In the occurrence of beta minus decay, the atomic number will increase by one. The mass number stays the same. A neutron is changed into a proton via the weak nuclear interaction. An electron and an electron anti-neutrino are emitted. (One of the down quarks that make up the hadron is being changed to an up quark, and that is enough to change the entire hadron).
In the occurrence of beta plus decay, the atomic number will decrease by one. The mass number stays the same. A proton is changed into a neutron. A positron and an electron neutrino are generally emitted.
Beta minus occurs when there are too many neutrons in the nucleus. Beta plus occurs when there are too many protons in the nucleus.
Important Detail: Some gamma rays are emitted shortly after beta plus, beta minus, or alpha decay because the nuclei still has excess energy.
Wiki User
∙ 9y ago
Wiki User
∙ 12y agoThere are two types of beta decay, beta- and beta+.
In beta- decay, the weak interaction causes a quark to change from down to up while emitting a W- boson. The quark change causes a neutron to change to a proton, raising the atomic number of the nuclide up by one, but keeping the Atomic Mass number the same. The W- boson splits into an electron and an electron antineutrino. The nucleus is left in an excited state. It comes down from that excited state by emitting a photon, called a gamma ray.
In beta+ decay, nearly the reverse process takes place, with some important differences. Energy is required to change a quark from up to down, which changes a proton into a neutron, lowering atomic number by one while keeping the atomic mass number the same. There is no boson, but a positron and electron neutrino is released. The nucleus is left in an excited state, and it comes down using the same gamma photon emission. The energy required to accomplish beta+ comes from excess binding energy, or electron capture or internal conversion. This may leave the electron cloud in an excited state, so it also may need to come down, emitting photons as x-rays of various energies.
Wiki User
∙ 12y agoIn beta- decay, the weak interaction causes a down quark to change to an up quark. This results in the alteration of a neutron into a proton, and the emission of a W- boson, which subsequently decays into an electron and an electron antineutrino.
Wiki User
∙ 14y agoit loses 2 protons and 2 neutrons so it becomes a different element
Wiki User
∙ 11y agoThe nucleus becomes a lower atomic weight and thus the atom becomes a different element.
Wiki User
∙ 11y agoits atomic mass decreases by two and its mass number decreases by four.
Wiki User
∙ 13y agoIt loses 2 protons and 2 neutrons.
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When an object is moved from a higher place to a lower place what changes?
Its potential energy.
When are changes of energy to mass and mass to energy observable?
-- In the cores of stars, where nuclear fusion reactions are taking place. -- Inside the casing of a nuclear weapon at the moment of detonation. -- In the fuel rods in the core of a nuclear power generating station. -- At the point of collision in the experimental target area in a particle accelerator.
What changes of states particles vibrate in place?
When a body freezes, its particles vibrate in place.
What energy changes take place in your ear?
none
What is the relationship between the particle size and wavelength?
IF and ONLY IF when the mass of particles are same. Large particle sizes will need high stream's velocity to carry it from one place to another,In another word If the stream velocity is slow than large particle sizes will be stationary.
What changes take place in the nucleus when an alpha particle is emitted?
In short, alpha radiation occurs when an unstable nucleus emits 2 protons and 2 neutrons from it's nucleus. This means that the atomic number decreases by 2 and the nucleon number decreases by 4.
Why is a alpha particle is not a neutral atom?
Alpha decay and beta decay (both forms of it) are two different types of radioactive decay. The former has a basis in quantum mechanical tunneling, and the latter is mediated by the weak nuclear force (weak interaction). These two decay schemes will not occur together because of what might be called exclusion or blocking. In either decay scheme, the remaining nucleons in the nucleus undergo what might be termed a "renegotiation" of the terms and conditions under which they are stuck together. The changes within the decaying atomic nucleus are so profound from the point of view of the nucleons, those protons and neutrons that make up a nucleus, that they all effectively "feel" it at the same time. This instantaneous "knowing" among the nucleons, probably communicated by the residual strong force (nuclear binding energy), will prevent the other type of decay from taking place when the first one is "happening" to the nucleus.
What changes have taken place in the basic plant cells to produce root cells?
Nucleus
What is the negatively charged particle that is one of the three basic building blocks of atoms?
This is the particle in an orbital in the space around the atoms nucleus and it is called an electron.
What happens when an element decays through alpha decay and spontaneous fission?
In alpha decay decay two neutrons and two protons are released from the nucleus and an alpha particle (an Helium nucleus) is released: the atom's nucleus changes in to that of a nucleus two place earlier in the periodic table (Proton number falls by 2, Nucleon number falls by 4) In spontaneous fission a heavy, unstable nucleus autonomously disintegrates and falls in to two smaller nuclei (daughter nuclei) of a similar mass and a few (depending on the nature of the fission) neutrons are released with high kinetic energy.
After an alpha particle leaves the nucleus will it speed up?
The alpha particle emitted in alpha decay will leave the nucleus of the atom with considerable kinetic energy. But it will begin slowing down immediately unless it's in a vacuum. This will be due to scattering events with any atoms or molecules it encounters along its path of travel. It will not experience an increase in velocity, so no, it won't speed up. A link to a related question can be found below.
What is the negatively charged particle that is one of the three building blocks of atoms?
That's the electron, located outside the nucleus. Electrons swirl about in a cloud around the nucleus, this cloud is somewhat organized into shells but is impossible to predict the place of one electron at anytime.
Is 110 percent humidity possible?
Yes, but not under normal circumstances. At, or above, 100%, condensation would take place on anything that could act as a nucleus - such as a dust particle in the air.
What causes the process of transmutations?
The number of protons in the nucleus changes.
Where does radioactive decay take place?
Radioactive decay happens to the unstable atom nuclei in its efforts striving to reach stability. The nucleus of any element atom should have specific neutron/proton ratio to be a stable nucleus. Also, the absolute number of protons should not exceed certain limit.For a nucleus with neutron/proton is higher than the stability ratio, two types of radioactive decay may occur to decrease the ratio in the nucleus in order to reach stability:radioactive beta decay: in which a neutron transforms into proton plus electron where the proton remains in the nucleus and the electron is emitted from the nucleus as beta radiationradioactive neutron decay: in which a neutron is emitted from the nucleus as neutron radiation (this transformation is relatively rare. Example of this transformation is the unstable Krypton-87)For a nucleus with neutron/proton is lower than the stability ratio, two types of radioactive decay may occur to increase the ratio in the nucleus in order to reach stability:radioactive proton decay: in which a proton in the nucleus transforms into neutron plus positron where the neutron remains in the nucleus and the positron is emitted from the nucleus as positive beta radiationproton attraction of one electron from the nearest orbit to the nucleus to form neutron that remains in the nucleus.For an unstable nucleus with number of protons exceeding the stability limit, the nucleus may reach stability with one or more of the above four nuclear transformations or by:fission of the nucleus into two or more smaller nuclei with emission of one or more neutrons (as the spontaneous fission of one of the plutonium isotopes).
What actually decays in radioactive decay?
The nucleus of the atom decays, and in the process, the nucleus transforms into another element, or into an isotope or isomer of the same element. In radioactive decay, the nucleus always emits some kind of particle(s). It is the high-energy emission of these particles that we call radiation. There are many different types of radioactive decay:Alpha decay results in the emission of an alpha particle (two neutrons and two protons)Beta decay results in the emission of a beta particle (an electron or a positron)Neutron decay results in the emission of a neutronProton decay results in the emission of a protonGamma decay results in the emission of a gamma particle (a photon)Neutrino decay results in the emission of a neutrino or antineutrinoIn some cases, a combination of the above emissions takes place. For example in double beta decay, a single nucleus emits two electrons and two antineutrinos in the same event.
How can meson exchange cpontribute to stability of nucleus?
Nucleus consists of protons and neutron. This means that there will be an repulsive force between protons as like charges repel each other. Therefore the nucleus will not be stable and breakdown. This is where mesons particle comes in. Whenever there is an repulsive force between protons the mesons particle convert one of the proton into a neutron and the neutron near is changed to a proton. This takes place in fraction of a second.p+ + π + -----------> nono + π - -----------> p+I think you would know what pi here is or ill type it later if you dont know.
