OCR A Jun 2015 Paper 1 Q6

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This question is about the attraction between particles. 14 (a) State how and explain why the attraction between nuclei and outermost electrons in gaseous atoms varies across Period 3.[2] (b) The table shows the boiling points of ammonia, fluorine and bromine. ammonia, NH3 fluorine, F2 bromine, Br2 Boiling point / C33188 59 Explain the different boiling points of NH3, F2 and Br2. Include the names of any relevant forces and particles. In your answer you should use appropriate technical terms, spelled correctly.OCR 2015<br />
 15[5] [Total: 7] END OF QUESTION PAPEROCR 2015<br />

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