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peterjaybee
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Hello, I am having issues with some nuclear physics revision questions
The following atomic masses have been determined (in Atomic mass units, u) (A = atomic mass number, Z = proton number)
Li(A=7,Z=3) - 7.0182 u
Be(A=7,Z=4) - 7.0192 u
Indicate the stable nucleus and determine its mode(s) of decay.
Ok I have approached this knowing the answer, but not understanding it. The Be nucleus is unstable and decays into the Li, most likely by electron capture.
My problem is I do not understant how to identify the unstable nucleus without reading the answer. The only thing I have noticed which may or may not be relevant is that both nuclei have the same mass number, A, making them isobars.
Can someone please explain how to identify the unstable nucleus?
Many thanks,
Peter
Homework Statement
The following atomic masses have been determined (in Atomic mass units, u) (A = atomic mass number, Z = proton number)
Li(A=7,Z=3) - 7.0182 u
Be(A=7,Z=4) - 7.0192 u
Indicate the stable nucleus and determine its mode(s) of decay.
Homework Equations
The Attempt at a Solution
Ok I have approached this knowing the answer, but not understanding it. The Be nucleus is unstable and decays into the Li, most likely by electron capture.
My problem is I do not understant how to identify the unstable nucleus without reading the answer. The only thing I have noticed which may or may not be relevant is that both nuclei have the same mass number, A, making them isobars.
Can someone please explain how to identify the unstable nucleus?
Many thanks,
Peter