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0620/42/M/J/21 [Turn over (iii) solvedpapers.co.uk 10 Complete the dot-and-cross diagram to show the electron arrangement in a molecule of Use dots for nitrogen electrons and crosses for fluorine electrons. Show outer electrons only. (c) Lithium nitride melts at 8130C. Nitrogen trifluoride melts at —2060C. ................
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