A-LevelChemistryChemical periodicityMay/June 2019Paper 1 Q31 Mark
The first eight successive ionisation energies for two elements of Period 3 of the Periodic Table are shown in the graphs. [Figure 3.1] What is the formula of the ionic compound formed from these elements?
AMgCl2
BCaBr2
CNa2S
DK₂Se
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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...
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