A-LevelChemistryChemical periodicityOct/Nov 2018Paper 1 Q121 Mark
The melting points of the Period 3 elements phosphorus to argon are shown in the table. Which factor explains the changes in melting points from phosphorus to argon?
Athe changes in electronegativity from phosphorus to argon
Bthe changes in first ionisation energy from phosphorus to argon
Cthe increase in the number of electrons in each atom from phosphorus to argon
Dthe number of atoms in each molecule of the element from phosphorus to argon
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The correct answer is D. This question tests the candidate's understanding of chemical periodicity within the Chemistrysyllabus. The examiner's mark scheme requires...
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