Cambridge International AS & A Level
5 LE 2019 970102P22 [Turn over 2 Carbon and silicon are elements in Group 14. (a)(i) Describe in simple terms the structure of solid C 60 [2] (ii)C 60 sublimes (turns directly from solid to gas) at approximately 800 K. C 60 (s) → C 60 (g) Diamond also sublimes but only above 3800 K. C diamond (s) → C(g) Explain why C 60 and diamond sublime at such different temperatures.
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