A-LevelChemistryChemical periodicityMay/June 2010Paper 1 Q171 Mark
Two properties of non-metallic elements and their atoms are as follows. property 1 has an oxide that can form a strong acid in water property 2 has no paired 3p electrons Which properties do phosphorus and sulfur have? phosphorus sulfur
A1 and 2, 1 only
B1 only, 1 and 2
C1 and 2, 1 and 2
D2 only, 1 only
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The correct answer is A. This question tests the candidate's understanding of chemical periodicity 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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