Please answer all parts of the question

2. Answer ALL parts a)-e). The electron affinities for the sand p block elements are given below (values in kJ molt) H -73 LI -60 Na -53 K -48 Rb -47 Cs -46 Be +18 Mg +21 Ca +186 Sr +146 Ba +46 B -27 -43 Ga -29 In -29 TI -19 -122 SI - 134 Ge - 119 Sn -107 Pb N +7 P -72 As -78 Sb - 103 BI -91 O -141 S -200 Se -195 Te -190 F -328 CI -349 Br -325 1 -295 At -270 He 0 Ne +29 Ar +35 Kr +39 Xe +41 Rn Po -35 -183 [2] [2] a) Define electron affinity, and explain why electron affinities of the elements can have positive or negative values. b) Explain why the group 1 elements have negative electron affinities, whereas the group 2 elements have positive electron affinities c) Describe and explain the general trend in electron affinity value moving across the p-block, identifying and explaining any anomalies. Use the elements Al to Ci to illustrate your answer. d) Describe and explain the general trend in electron affinity value moving down a group the p-block, identifying and explaining any anomalies. Use the elements F to At to illustrate your answer. e) Explain the principles of Valence Shell Electron Pair Repulsion Theory (VSEPR), and hence use it to predict the shapes of the following compounds. Identify, if appropriate, where there are deviations from the perfectly symmetrical shape: Me30", BrF3, AsCls, XeF2 [41 [4] [8]