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What is the change in atomic number when an atom emits a positron?
Wiki User
∙ 13y ago
Emitting a positron, turns a proton into a neutron. So the atomic number goes down by 1, while the mass number remains the same.
Wiki User
∙ 13y ago
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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 does an atom enter into the excited state?
An exited atom radiate through the process to gain stability. When the ratio or protons to neutrons is less or higher than that corresponding to the stability ratio the nucleus radiate either:beta (-) radiation to reduce the number of neutrons, orbeta (+) radiation or electron capture to reduce the number of protonsgamma radiation to bring the nucleus to ground state energy level.Also an excited atom emits radiation (Alpha, beta, gamma, neutrons, ...) when the nucleus atomic number is higher than 83 to reduce the number of nucleons in thenucleus to reach stability.
Is Jupiter a luminous or non luminous planet?
Jupiter is not luminous in that it emits light, it reflects the Suns light so that it is visible to us on Earth. See also Albedo.
What is quartz fluorescence?
Fluorescence occurs when a substance has absorbed light and later emits that light. Quartz is a material that undergoes this process. Minerals and creatures can both exhibit fluorescence.
Are air horns legal in the UK?
It is illegal to use any type of horn that emits more than one tone, unless the tones are simultaneous. There are no exceptions. Emergency vehicles on route are an exception.
When radioactive phosphorus decay it emits a positron will the resulting nucleus be another isotope of phosphorus?
No, whenever an atom emits a positron its atomic number is decreases by one unit (because a proton is converted into a neutron and a positron) but atomic mass remains the same so phosphorus is converted into silicon atom with same atomic mass.
What is the change in the atomic number when an atom emits gamma radiation?
The atomic number does not change when gamma radiation is emitted.
What happens when a radioactive isotope decays?
It emits an electron and an antineutrino and increases by one in atomic number while ending up with one fewer neutrons, or it emits a positron and a neutrino and decreases by one in atomic number while ending up with one more neutron. In both cases the total number of protons and neutrons remains unchanged, and the number of orbital electrons will eventually change to match the new atomic number.
What is the change in atomic number when atom emits gamma radiation?
When a beta particle is emitted from a nucleus via Beta- decay, the mass number stays the same, and the atomic number goes up one, because one neutron is changed into one proton by Beta- decay.In Beta+ decay, the opposite is true. A proton is converted into a neutron, again keeping the mass number the same, but in this case reducing the atomic number by one.The ending result is different, however. In Beta-, the beta particle is an electron, while in Beta+, the beta particle is a positron.
What will happen to an atom is an beta particles emits or adds?
The beta particle will alter the electromagnetic field of the atom. An electron will add to the electromagnetic charge if emitted, and subtract from, if it is absorbed. A positron will do the opposite. The atomic nucleus will also change. an electron can convert a neutron to a proton if emitted, and a proton to a neutron if absorbed. The positron, again, will do the opposite.
What is the change in the atomic number when the atom emits an alpha particle?
The atomic number will decrease by 2, the number of protons in the emitted alpha particle. An alpha particle is a helium-4 nuclei with two protons and two neutrons.
When bismuth 214 emits a positron the remaining daughter nucleus is what?
lead
When thorium emits beta particle the resulting nucleus has a atomic number?
The resulting element is protactinium, atomic number 91.
What change in atomic mass when an atom emits gamma radiation?
It remains the same.
What will happen to an atom is an alpha particles emits or adds?
Alpha particles are emitted from the atom taking with it 2 protons and (I am pretty sure) two neutrons. This will change the atomic number of the atom and the atomic weight.
What change in atomic number occurs when a nucleus emits an alpha particles?
An alpha particle has 2 protons and 2 neutrons. This would make the atomic number decrease by 2 and the Atomic Mass will decrease by 4.
If bismuth-213 emits an alpha particle what is it?
bismuth will contain 81 protons turning into Thallium with an atomic number of 81. If it emits a beta particle it doesn't change its still bismuth, only it become more energetic.
