A-LevelPhysicsNuclear physicsFeb/Mar 2018Paper 1 Q391 Mark
A nucleus of neptunium-236 contains 93 protons and 143 neutrons. This nucleus decays with the emission of an α-particle. The nucleus formed then emits a β⁻ particle. Which diagram shows the changes in the number P of protons and the number N of neutrons in these nuclei?
A[Diagram option]
B[Diagram option]
C[Diagram option]
D[Diagram option]
✓ Correct Answer
The correct answer is D. This question tests the candidate's understanding of nuclear physics within the Physicssyllabus. The examiner's mark scheme requires...
📋 Examiner Report & Trap Analysis
Common mistake: 62% of candidates selected the distractor because they confused... The examiner specifically designed this question to test whether students can differentiate between... To secure full marks, candidates must demonstrate...
🔒
Unlock the Examiner's Answer
Sign up for free to reveal the correct answer, the official mark scheme breakdown, and the examiner trap analysis for this question.
Sign Up Free to Unlock →Join thousands of Cambridge students already using Oracle Prep