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5.2.3a Radioactive decay

An isotope of thorium has the nuclide notation $90232Th^{232}_{90}\text{Th}$ .

A nucleus of this isotope decays by emitting an $α\alpha$ -particle. A $β−\beta^-$ -particle is then emitted to form nuclide $X\text{X}$ .

What is the notation for nuclide $X\text{X}$ ?

$88228X^{228}_{88}\text{X}$

$89228X^{228}_{89}\text{X}$

$87230X^{230}_{87}\text{X}$

$89232X^{232}_{89}\text{X}$

5.2.3a Radioactive decay Questions

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.

An isotope of thorium has the nuclide notation $90232Th^{232}_{90}\text{Th}$ .

A nucleus of this isotope decays by emitting an $α\alpha$ -particle. A $β−\beta^-$ -particle is then emitted to form nuclide $X\text{X}$ .

What is the notation for nuclide $X\text{X}$ ?

$88228X^{228}_{88}\text{X}$

$89228X^{228}_{89}\text{X}$

$87230X^{230}_{87}\text{X}$

$89232X^{232}_{89}\text{X}$

120 exam-style questions on CIE IGCSE Physics 5.2.3a Radioactive decay. Each one has a worked solution and a mark scheme showing where the marks go.