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Question 4 (20 marks) The following table shows the electronegativity values of Period 3 elements Atom Na Mg AI P s CI Electronegativity 0.93 131 1.61 219 2.58 3.16 (a) Explain, in terms of atomic radius, why the electronegativity values of element increases going across Period 3 (provide at least 3 reasons) [3 marks] CE2000S in Chemistry, TM1 Sem 1 2022 (b) Calculate the difference in electronegativity values for the following pair of atoms and predict the type of bond forms between the atoms. Difference in Type of bond electronegativity value Al and CI P and S Na and I (1) Arrange the pair of atoms in the order of increasing covalent racter 3+2 marks] (c) Which acid is stronger? Give your tication i H.COs and H.SO [4 marks] d) A bottle of acrylic paint was found to have a density of 2.85 +0.05 g/cm and the mass of that paint was determined to be 3.520.05 kg. Calculate the volume of the paint in the bottle (with appropriate significant figs and uncertainty). [4 marks]
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