A-LevelChemistryAtomic structureFeb/Mar 2024Paper 1 Q181 Mark
This question refers to isolated gaseous species. The species F⁻, Ne and Na⁺ are isoelectronic. This means they have the same number of electrons. In which order do their radii increase?
Asmallest: Na⁺, largest: F⁻, Ne
Bsmallest: F⁻, largest: Ne, Na⁺
Csmallest: Na⁺, largest: Ne, F⁻
Dsmallest: Ne, largest: F⁻, Na⁺
✓ Correct Answer
The correct answer is C. 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...
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