Exam (elaborations)
OCR- A LEVEL-CHEMISTRY- PERIODIC-TABLE-ELEMENTSAND-PHYSICAL QUIZ PAPER 1+ MARKING SCHEME PAPER 1 2023 UPDATE
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SECTION A You should spend a maximum of 20 minutes on this section. Answer all the questions. 1 Which row shows the atomic structure of 55Mn2+? Protons Neutrons Electrons A 25 30 23 B 25 55 23 C 27 30 25 D 30 25 28 Your answer 2 The Group 2 elements react with water, forming a solution an...
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