Chemistry past papers › 9701/21/O/N/23

9701/21/O/N/23 Question 1

Chemistry October/November 2023 Paper 21 · 22 marks · Electrons, energy levels and atomic orbitals, Ionisation energy, Particles in the atom and atomic radius, Some reactions of the halide ions, Structure and properties, Period 3 chlorides with water, Dot-and-cross diagrams, Enthalpy change definitions, Hess’s law

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Question 2

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