A-LevelChemistryChemical periodicityFeb/Mar 2017Paper 1 Q151 Mark
The magnitude of property X of five elements from the third period of the Periodic Table, P, Q, R, S and T is shown. P, Q, R, S and T have consecutive atomic numbers. The letters do not represent the symbols of the elements. [Figure showing a graph with 'X' on y-axis and 'atomic number' on x-axis, with points P, Q, R, S, T plotted]. Which row correctly identifies property X and element R?
Aelectrical conductivity Al
Belectronegativity Si
Cmelting point Al
Dmelting point Si
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The correct answer is C. This question tests the candidate's understanding of chemical periodicity within the Chemistrysyllabus. The examiner's mark scheme requires...
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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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