Edexcel Jan 2017 (IAL) Paper 2 Q15

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15 Use the Pauling electronegativity values given in the table to answer the following questions. H 2.1 Li 1.0 Na 0.9 Be 1.5 Mg 1.2 B 2.0 Al 1.5 C 2.5 Si 1.8 N 3.0 P 2.1 O 3.5 S 2.5 F 4.0 Cl 3.0 (a) Which compound has covalent bonds with the greatest polarity? A H2O B CF4 C MgF2 D Al2O3 (b) Which compound is most ionic? A Li2O B MgO C AlF3 D NaF (1) (1) Use this space for rough working. Anything you write in this space will gain no credit. (Total for Question 15 = 2 marks) *P48368A0824* D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A D O N O T W R I T E I N T H I S A R E A<br />

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