A-LevelChemistryAtomic structureFeb/Mar 2022Paper 1 Q21 Mark
What is the electronic configuration of Mg²⁺?
A1s² 2s² 2p⁶
B1s² 2s² 2p⁶ 3s²
C1s² 2s² 2p⁶ 3s² 3p²
D1s² 2s² 2p⁶ 3s² 3p⁶ 3d² 4s²
✓ Correct Answer
The correct answer is A. This question tests the candidate's understanding of atomic structure within the Chemistrysyllabus. 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