Note AcademyNote Academy
Start

Physics (AS & A Level) · May / June 2016 · Paper 12 · Question 38

9702Atoms, nuclei and radiation

The gold nucleus $^{185}_{79}\text{Au}$ undergoes alpha decay. What are the nucleon number and proton number of the nucleus formed by this decay?

  1. Anucleon number 183, proton number 79
  2. Bnucleon number 183, proton number 77
  3. Cnucleon number 181, proton number 77
  4. Dnucleon number 181, proton number 75

As printed in the paper

Show the answer

Correct answer: C. nucleon number 181, proton number 77

Sit this whole paper →More on Atoms, nuclei and radiation

Make a free account to save your answers and see your weak topics and ask the AI why a wrong answer is wrong.