(may be broke/outdated!)
Question by chasitycapehart: Look at each nuclear equation below and identify whether it is alpha decay,beta decay,or fusion:?
A. Thorium-234 Proactinium-234+-1 e
B. Hydrogen + Hydrogen Helium
C. Uranium-238 Thorium-234+Helium-4
Best answer:
Answer by goober
A. beta decay
B. Fusion
C. Alpha decay
Know better? Leave your own answer in the comments!
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2 Responses
In alpha decay, a helium nucleus is released. The atomic mass of the product should be four less than the reactant’s atomic mass.
Beta decay actually comes in two flavors. In one case, the atomic number of the product should be one more than that of the reactant’s atomic number. Also, there should be an electron on the product side. This is beta-plus decay. The other kind of beta decay, beta-minus decay, the atomic number of the reactant should be one more than the atomic number of the product. Also, there should be a positron on the product side.
In fusion, there are at least two reactants and only one product.
So, for the identification,
A- Beta decay
B- Fusion
C- Alpha decay
A: Beta- decay. A neutron in the nucleus splits into a proton, an electron and an anti-nutrino. This is the normal decay mode for nuclii which have too many neutrons to be stable.
B: Fusion- two hydrogen atoms fuse to become a helium atom
C: Alpha decay, 2 protons and 2 neutrons are emitted from the neucleus. This is the normal decay mode for nuclii which are too heavy to be stable.