CAIE A Level Chemistry 9701 · Chemical bonding

Chemical bonding: compare question

Compare5 marksStandard

The Pauling electronegativities of oxygen, fluorine and chlorine are 3.5, 4.0 and 3.0, respectively. Compare the electronegativity of fluorine with those of oxygen and chlorine, and explain why fluorine is the most electronegative element.

How this question is marked

5 marks, so the mark scheme is looking for about 5 separate creditworthy points. Making the same point twice in different words earns it once.

Compare means: Give similarities or differences between two things, and say which side each point belongs to. Write each point as a pair, for example: A is X, whereas B is Y. Two separate descriptions rarely earn the marks.

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