Exam (elaborations)
OCR 2023 GCSE Combined Science B Twenty First Century Science J260/02: Chemistry (Foundation Tier) Question Paper & Mark Scheme (Merged)
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2 © OCR 2023 1 The diagram shows part of Mendeleev’s Periodic Table. B 11 C 12 N 14 O 16 F 19 Al 27 Si 28 P 31 S 32 Cl 35.5 As 75 Se 79 Br 80 In 115 Sn 119 Sb 122 Te 128 I 127 (a) Give the symbols of the two elements shown in the diagram which are not in or...
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