Before you move on, make sure you can tell the three types of radioactive decay apart. Pick the type of decay that best matches the description given.
Emits a helium nucleus.
Alpha decay emits a helium nucleus.
Alpha decay emits a helium nucleus.
Alpha decay emits a helium nucleus.
Emits a positron.
Beta-plus decay emits a particle that has the same mass and equal but opposite charge of an electron.
Beta-plus decay emits a particle that has the same mass and equal but opposite charge of an electron.
Beta-plus decay emits a particle that has the same mass and equal but opposite charge of an electron.
Emits an electron.
Beta-minus emits an electron.
Beta-minus emits an electron.
Beta-minus emits an electron.
\(\mathsf{ ^{228}_{90}\text{Th} \rightarrow ^{224}_{88}\text{Ra} + ? }\)
This is the alpha decay equation of thorium to radium.
This is the alpha decay equation of thorium to radium.
This is the alpha decay equation of thorium to radium.
Often accompanies beta decay.
Beta decay often leaves a daughter cell in an excited state to release a gamma ray.
Beta decay often leaves a daughter cell in an excited state to release a gamma ray.
Beta decay often leaves a daughter cell in an excited state to release a gamma ray.
Releases a neutrino.
In beta decay, a neutrino is also released with an electron and an antineutrino is also released with a positron.
In beta decay, a neutrino is also released with an electron and an antineutrino is also released with a positron.
In beta decay, a neutrino is also released with an electron and an antineutrino is also released with a positron.
\(\mathsf{ ^{234}_{90}\text{Th} \rightarrow ^{234}_{91}\text{Pa} + ? }\)
This is the beta-minus decay of thorium to protactinium.
This is the beta-minus decay of thorium to protactinium.
This is the beta-minus decay of thorium to protactinium.
\(\mathsf{ ^{234}_{93}\text{Np} \rightarrow ^{234}_{92}\text{U} + ? }\)
This is the beta-plus decay of neptunium to uranium.
This is the beta-plus decay of neptunium to uranium.
This is the beta-plus decay of neptunium to uranium.
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