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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.
What is the difference between the energy that comes into Earth from the Sun and the energy that Earth emits back to space?
The energy that Earth receives from the Sun primarily comes in the form of solar radiation, which warms the planet and drives weather systems and photosynthesis. In contrast, the energy Earth emits back to space is primarily in the form of infrared radiation, which is a result of the planet re-radiating the absorbed solar energy. The balance between incoming solar energy and outgoing thermal energy is crucial for maintaining Earth's climate and temperature. Any significant imbalance can lead to climate change, as excess energy can cause warming, while a deficit can lead to cooling.
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.
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.
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 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.
When bismuth 214 emits a positron the remaining daughter nucleus is what?
When bismuth-214 emits a positron, it undergoes beta-plus decay to produce polonium-214. This decay process involves the conversion of a proton into a neutron, releasing a positron and a neutrino.
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.
What decay occurs when a nucleus emits an electron in the process of a proton decaying into a neutron?
The decay process you are referring to is called beta-plus decay, also known as positron emission. In this process, a proton within the nucleus transforms into a neutron by emitting a positron (anti-electron) and an electron neutrino. This results in a decrease of one in the atomic number of the nucleus while the mass number remains constant.
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.
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 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.
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.
When an isotope undergoes alpha decay which of the following change A The name of the element B The atomic number C The mass number D All of these change?
D. All of these change. In alpha decay, an isotope emits an alpha particle, which consists of two protons and two neutrons, leading to a decrease in the atomic number and mass number of the parent isotope. This results in the formation of a new element with a different name, atomic number, and mass number.
