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ProPatto16
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Homework Statement
Complete the following decay equations by inserting the missing particle or nuclide information. Identify each type of decay.
i) 90?Sr = ?39Y + ? + ?
ii) 22?Na = ??Ne + β+ + ? + energy
iii)24294Pu = ??? + alpha + ?
iv) 235?U = 91?Sr + 141?Xe + ?
v) 0-1e + 0+1e → ?
The Attempt at a Solution
i) 9038Sr = 8939Y + β- + ? this is beta decay.
- note, lost 1 nucleon. is this ? just 1n?
ii) 2211Na = 2010Ne + β+ + ? + energy also beta decay
- note, lost 2 nucleons. is this ? just 21n?
iii) 24294Pu = 23892U + alpha + ? alpha decay
iv) 23592U = 9138Sr + 14154Xe + ? fission?
v) i have no idea.
- Just looking at that, there seems to be an extra ? for each decay equation. in my text throughout there's only the decay pronumeral in the products, not something extra as well. so I am not really sure what is meant to go in there?
- Also I am not sure about the relevance of the energy is ii) since all of these decays emit energy anyway.
- iv) doesn't look to be any kind of decay, it seems to represent fission. which would make that '?' 31n?
- and v) i have no idea what the result of an electron positron bond is.