Question

8.30. Periodic Properties Il Consider two hypothetical elements, W and Z. Element W has an electron affinity of -300 kJ/mol, and element Z has an electron affinity of -75 kJ/mol. 02 25 no Toml000. IS1909 noitesino duo lom nelo 19111onA a. If you have a W-ion and a Z-ion, from which ion would it require more energy to remove an electron? Explain your answer. Tom 1 000 as OTS Shila Sanolad of silom od X inamsls bluow sidst blbona 9010 To Viimsi 16 b. If elements W and Z are in the same period of the periodic table, which atom would you expect to have the greater atomic radius? Why? bong marini ramos bluowolds albons sont Y bris X in malo ob 1 979W boyil pibos narrati on ad verim riw.bois ms2013ni ton is in smals 25 C. Assuming that the elements are in the same period, which element would you expect to have the it! smaller first ionization energy? energy? alla Xio motans soos sd Y lo moje nis blow.b d. Do the valence electrons in element Z feel a greater effective nuclear charge than those in element W? Explain how you arrived at your answer

Answer 1

These questions are solved as follows:

I Sol-; We are given, electron affinity for W & Z: for W Z = - 300 KJ/mol = -75 KJ/mol fad As we know, electron affinity for any atom is the amount of energy released on introducing an electron ito it outermost shell and A ka = - AE