IB Physics HL E 3 1 Isotopes Questions

Identify HL isotopes from proton and nucleon numbers, using nuclear-mass evidence and decay changes to compare related nuclei.

Exam points

define isotopes as nuclei with the same proton number but different nucleon numbers and distinguish them from other nuclides
use proton and nucleon-number changes in alpha and beta-minus decay sequences to identify the resulting nucleus or isotope relationship
explain why precise nuclear-mass measurements provide evidence for isotopes and interpret isotope questions from nuclear data

[Maximum number: 2]

The binding energy of the stable nuclide ${ }_{54}^{131} \mathrm{Xe}$ is 1.105 GeV .

$\quad{ }_{54}^{133} \mathrm{Xe}$ and ${ }_{54}^{131} \mathrm{Xe}$ are two isotopes of xenon.

Outline what is meant by isotopes.

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