IGCSE A Level Chemistry Competitive Exam MCQs – Practice Test 13 (Chapter 22)
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MCQ 61: The dimer of AlCl3 is:
MCQ 62: Elements get more electronegative going across:
MCQ 63: Consider the reaction: Na(s) + O2(g) → Na2O(s). Moles of sodium needed to balance the equation would be:
MCQ 64: From the metals in a period, the neighboring members differ by:
MCQ 65: The electronegativity of hydrogen is:
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