Physics 0625 · IGCSE · Radioactivity

Radioactivity — practice question

When unstable nuclei decay, they give off ionising radiation.

(a)[2]

Join each type of ionising radiation to the form it is.

(b(i))[2]

State what is meant by the term isotope.

(b(ii))[3]

Using the data shown, determine the half-life of iodine-131. Show your working clearly.

Worked solution & mark scheme

This 7-mark question has a full step-by-step worked solution and mark scheme. One marking point: “alpha (α) → a helium nucleus” …