IB Physics HL E.3.3 Binding energy curve Question Bank

Practise IB Physics SL/HL E.3.3 by applying binding energy curve concepts to exam-style physics questions.

Exam points

identify the relevant physical quantity, model or diagram
apply the correct equation and units to the evidence
justify the result using conservation laws, fields or energy relationships

[Maximum number: 1]

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.

$\quad{ }_{54}^{133} \mathrm{Xe}$ is radioactive. Suggest how the binding energy per nucleon for ${ }_{54}^{131} \mathrm{Xe}$ compares with that of ${ }_{54}^{133} \mathrm{Xe}$ .

binding energy per nucleon is a measure of stability so ${ }_{54}^{131} \mathrm{Xe}$ has the greater binding
energy per nucleon

Correct mention of stability required to award the mark.

Marking guidance:

Allow opposite comment for Xe 133.

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E.3.3—Binding energy curve question 1