Radioactive Decay (Grades 11-12)
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The process by which a nucleus spontaneously undergoes a change from a state with less binding energy to a state with more binding energy is called
- nuclear fusion.
- nuclear fission.
- radioactive decay.
The difference in the between the two different isotopic nuclei during is the energy associated with the released particle.
- nuclear force; alpha decay
- binding energy: beta decay
- binding energy; alpha decay
- nuclear force; beta decay
Explain the details of the process of alpha decay. You must include, at the very least, all of the following terms in your explanation: proton, neutron, binding energy, Helium, nucleus, alpha particle, atomic number, atomic mass, and alpha decay.
During the process of , a nucleus emits an energetic electron, called a(n) , resulting from the spontaneous transformation of a neutron into a proton and an electron.
- gamma decay; neutrino
- beta decay; beta particle
- beta decay; positron
- alpha decay; positron
During beta decay, the mass number and atomic number of the antineutrino are zero.
When a proton transforms into a neutron and a positron during radioactive decay, that positron is actually a positively-charged electron.
Just like when an atom emits light as electrons move from a more excited state to a less excited state, an excited nucleus releases energy by emitting a high-energy photon during
- alpha decay.
- beta decay.
- gamma decay.
- electron transitions.
Write the nuclear equation for the alpha decay of Uranium-238. What is the resulting isotope and of which element?
Write out the equation for the beta decay of bismuth-213. What is the daughter element?
What new element is formed when curium-244 emits two alpha particles and two gamma rays? Include the element's isotopic mass and atomic number in your notation.