IGCSE A Level Chemistry MCQs – Practice Test 2 (Chapter 9)
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MCQ 6: The electronic configuration of chromium is:
MCQ 7: Electrons occupy separate orbital within the same sub-shell to reduce:
MCQ 8: The magnitude of ionization energy depends upon:
MCQ 9: Whenever there is no empty orbital is available within sub-shell, electrons are:
MCQ 10: There is less attraction between the fifth electron of Boron and nucleus, hence that electron resides in:
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