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Compare and contrast beta-minus and beta-plus decay.
Beta-minus: Neutron transforms into a proton, emits electron and antineutrino. | Beta-plus: Proton transforms into a neutron, emits positron and neutrino.
What are the key differences between alpha and beta decay?
Alpha: Emission of a helium nucleus, changes mass and atomic number significantly. | Beta: Emission of an electron or positron, changes only atomic number.
Compare neutrinos and antineutrinos.
Neutrinos: Emitted in beta-plus decay. | Antineutrinos: Emitted in beta-minus decay. Both are electrically neutral and have nearly zero mass.
Compare alpha particle and gamma ray.
Alpha particle: Consists of 2 protons and 2 neutrons, has mass and charge. | Gamma ray: Is a high-energy photon, massless and chargeless.
Compare electron and positron.
Electron: negatively charged particle emitted in beta-minus decay. | Positron: positively charged particle emitted in beta-plus decay.
Describe the process of alpha decay.
An unstable nucleus emits an alpha particle (). The atomic number decreases by 2, and the mass number decreases by 4.
Describe the process of beta-minus decay.
A neutron in the nucleus transforms into a proton, emitting an electron () and an antineutrino (). The atomic number increases by 1, while the mass number remains the same.
Describe the process of beta-plus decay.
A proton in the nucleus transforms into a neutron, emitting a positron () and a neutrino (). The atomic number decreases by 1, while the mass number remains the same.
Describe the process of gamma decay.
An excited nucleus releases energy by emitting a gamma ray photon (). The atomic number and mass number remain unchanged.
What happens to a neutron during beta-minus decay?
The neutron transforms into a proton, emitting an electron and an antineutrino.
What happens to a proton during beta-plus decay?
The proton transforms into a neutron, emitting a positron and a neutrino.
What is alpha decay?
A nucleus emits an alpha particle (), decreasing the atomic number by 2 and the mass number by 4.
What is beta-minus decay?
A neutron transforms into a proton, emitting an electron () and an antineutrino (), increasing the atomic number by 1, while the mass number remains the same.
What is beta-plus decay?
A proton transforms into a neutron, emitting a positron () and a neutrino (), decreasing the atomic number by 1, while the mass number remains the same.
What is gamma decay?
An excited nucleus releases energy by emitting a gamma ray photon (). The atomic number and mass number remain unchanged.
Define alpha particle.
A particle consisting of two protons and two neutrons, equivalent to a helium nucleus ().
Define neutrino.
An electrically neutral particle with nearly zero mass, emitted in beta-plus decay.