A-LevelChemistryChemical periodicityMay/June 2017Paper 1 Q131 Mark
Which graph correctly shows relative electronegativity plotted against relative atomic radius for the elements Na, Mg, Al and Si?
AGraph showing points such that atomic radius increases from left to right on x-axis and electronegativity increases from bottom to top on y-axis, with Si bottom-left and Na top-right.
BGraph showing points such that atomic radius increases from left to right on x-axis and electronegativity decreases from top to bottom on y-axis, with Si top-left and Na bottom-right.
CGraph showing points such that atomic radius increases from left to right on x-axis and electronegativity increases from bottom to top on y-axis, with Na bottom-left and Si top-right.
DGraph showing points such that atomic radius increases from left to right on x-axis and electronegativity decreases from top to bottom on y-axis, with Si bottom-left and Na top-right.
✓ Correct Answer
The correct answer is B. 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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