A-LevelChemistryAtomic structureMay/June 2011Paper 1 Q11 Mark
Helium, He, is the second element in the Periodic Table. Tritium is the isotope of hydrogen ³H. What is the same in an atom of He and an atom of ³H?
Athe number of electrons
Bthe number of neutrons
Cthe number of protons
Dthe relative atomic mass
✓ Correct Answer
The correct answer is B. 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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