CAIE IGCSE Physics 5.2.3.5 Decay Equations Using Nuclide Questions

Practise completing nuclear decay equations in nuclide notation by balancing proton and nucleon numbers for emissions.

Exam points

calculate corrected count rate by subtracting background count rate
convert detector counts and time into counts per second or minute
analyse radioactive decay count-rate data and half-life measurements

[Maximum number: 3]

Sodium-24 is an isotope of sodium (Na) that has a proton number of 11 and a nucleon number of 24.

Sodium-24 decays by emission of a beta-particle to form an isotope of magnesium (Mg).
Use nuclide notation to write down the nuclide equation for this decay.

${ }_{11}^{24} \mathrm{Na} \rightarrow{ }_{12}^{24} \mathrm{Mg}+{ }_{-1}^{0} \beta$ ${ }_{11}^{24} \mathrm{Na}$ on LHS
${ }_{-1}^{0} \beta$ on RHS
${ }_{12}^{24} \mathrm{Mg}$ on RHS

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CAIE IGCSE Physics 5.2.3.5 Decay Equations Using Nuclide Questions question 1