The Pauling electronegativity values of elements can be used to predict the chemical properties of compounds. Use the information in Table 1.1 to answer the following questions. [Table 1.1]

1. (a)(i)Define electronegativity.[1]
2. (a)(ii)O and S are in Group 16. Explain the difference in the Pauling electronegativity values of O and S.[2]
3. (b)(i)LiH is an ionic compound. Draw a dot-and-cross diagram of LiH. Include all electrons.[2]
4. (b)(ii)Suggest the shape of a molecule of H2S.[1]
5. (c)(i)Write an equation that represents the first ionisation energy of H.[1]
6. (c)(ii)Explain why there is no information given in Table 1.1 for the second ionisation energy of H.[1]
7. (c)(iii)Give the full electronic configuration of S2+(g).[1]
8. (d)(i)Write an equation for the reaction of SO2 with H2O.[1]
9. (d)(ii)Write an equation for the reaction of SO2 with NaOH.[1]
10. (d)(iii)Construct an equation for the reaction of CO2 with Mg(OH)2.[1]
11. (e)(i)Complete Table 1.2 by placing a tick (✔) to show which of the compounds have molecules with an overall dipole moment. [Table 1.2][2]
12. (e)(ii)At 150°C and 103 kPa, all of the compounds listed in Table 1.2 are gases. Under these conditions, 0.284 g of one of the compounds occupies a volume of 127 cm³. Use this information to calculate the Mr of the compound. Hence, identify the compound from those given in Table 1.2. Show your working. Mr = identity of compound =[3]

This question uses a diagram from the original paper, which isn't shown here. Open the full paper from the past papers archive to see it.