Exam (elaborations)
A-Level Edexcel Chemistry Examination Questions and Answers
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How to test for C=C decolourises bromine water Atomic Number number of protons in the nucleus of an atom of that element. Mass Number the sum of protons and neutrons in a nuclues of an atom Isotopes atoms of the same elementwith the same numberof protons but different nuber of neutrons Relative...
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