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OCR B Salters Chemistry exam 2023 with 100% correct answers
- Vak
- Instelling
History of the atom correct answersSolid sphere Johnson - Plum pudding (-ve electrons) Rutherford - fired alpha particles at thin gold sheet, a few were deflected backwards - tiny +ve nucleus, surrounded by cloud of -ve electrons Electrons in shells/ energy levels Percentage yield equation co...
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