IGCSE A Level Chemistry MCQs – Practice Test 7 (Chapter 2)
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MCQ 31: The mass number is the:
MCQ 32: The number of neutrons (n0) in an atom of aluminium (Al) is:
MCQ 33: Neutrons (n0) are neutral and carry:
MCQ 34: The major part of an atom is:
MCQ 35: Protons (p+) and neutrons (n0) constitute the:
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