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IB IBO Chemistry May 2023

QP-202305-Chemistry-P1（TZ1）-SL · Question 12

#amount #of #substance
Question (excerpt):
12. In which molecule does the central atom have an incomplete octet of electrons? A. H2Se B. PH3 C. OF2 D. BF3 – 7 – 2223 – 6110

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