Alpha particles, two neutrons, two protons, helium nuclei 42He2+, when emitted, a mass number 4 lower and atomic number 2 lower, they are positive, heavy and slow moving so in an electric field weakly attracted to the -ve plate, Beta particles, electrons ejected from the nucleus at high speed, 0-1e, when emitted, atomic number 1 higher bc a neutron is changed into a proton, mass unchanged, they are light and fast so in an electric field deviate to +ve plate, positron, anti-electrons that eject from the nucleus at high speed, same mass as an electron but different charge, positive, electron and itself annihilate each other when they come in contact and create gamma radiation, when emitted, atomic number 1 lower bc a proton was changed into a neutron, mass unchanged 01e, electron capture, during ____, atomic number goes down by 1 bc proton changes into a neutron, proton-rich nucleus absorbs an inner electron, this electron combines with a proton to become a neutron, Gamma radiation, high energy electromagnetic radiation, emitted when a heavy nucleus rearranges itself into a more stable configuration, emitted after electron capture, has no effect on mass number or atomic number of the atom that emits it bc its a form of energy and is not an atomic particle, is electromagnetic radiation of short wavelength so unaffected in an electric field

radioactive decay

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