A-LevelChemistryAtomic structureOct/Nov 2022Paper 1 Q11 Mark
Why is the first ionisation energy of phosphorus greater than the first ionisation energy of silicon?
Aphosphorus atom has one more proton in its nucleus.
BThe atomic radius of a phosphorus atom is greater.
CThe outer electron in a phosphorus atom is more shielded.
DThe outer electron in a phosphorus atom is paired.
✓ 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