Skip to content

Course home

Sign up

5.2.3a Radioactive decay

EasyMedium
12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273747576777879808182838485868788899091
Question 90

The nuclide symbol for radioactive thoriumis 90228Th{}^{228}_{90}\text{Th}90228​Th.

A nucleus of this isotope of thorium emits an α\alphaα-particle.

What is the proton number (atomic number) of the nucleus after it has emitted the α\alphaα-particle?

[2]
Markscheme

5.2.3a Radioactive decay Questions

  1. IGCSE
  2. /Physics
  3. /5.2.3a Radioactive decay

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.

Question bank