Question

selecuul UI e vunum 14. Since the activity series describes the propensity for a metal to lose electrons one might think that ionization energies could predict the activity series. Ionization energies are measured in the gas phase and have the following values for the metals used in this laboratory: Reaction Ag (5) ► Agt (g) + 1 e Cu (8) → Cut (g) + 1 e'] → Cu(g) + 1 e Fe (8) ► Fet (g) + 1 e'] → Fe2+ (g) + 1 e Mg(s) → Mgt (g) + 1 e'] → Mg2+ (g) + 1 e Zn (s) → [Zn (g) + 1 e'] → Zn²+ (g) + 1 e Energy (kJ/mol | 731.0 2703.4 2324.4 2188.4 2639.7

Does the ordering of activity series Mg, Zn, Fe, Cu, Ag agree with the ionization energies of the elements? Why or why not?

Answer 1

about the reactivity of Activity Series tells metals. Activity series - of hi ng AL en re Nih cu Ag Au As we go from left to right, reactivity metals decreases means tendency to loose decreases. Now I E (KI) 131 Ages) Agt (g) + e- Cucs) [Cu(a) te ] Merte- 270314 fees) [ferigter - Fe2+ te- & 324.4 ng(s) [ngt (g) + e- ongette - 218814 Zn(s) (ant (g) te-] 2n2+te 2639.7 Now more the I. & lesser will be reactivity lesser tendency to loose es. Now, except Ag, all the energy given = Ist means Ionisation nergy given - Energy and Ione's atian energy table Now acc. to Ionisation energy Reacsiruty & & Order - (Ag > Mg> rezanu Honly le- looses to Activity series Reactivery order → ng > Zn7 re> Cu >Ag Acc

So Bore order oth differ from each other. This is because - - Ag should be east u actiuity series and Ist ni ionisation enengy table because in 1.E table we are considering anly Ist non satian. energy of Ag and for oruus it is sum of Ist I. E + II no Ie , that's why Ag has least walle. so more reactue. - In Te table + Reactlinky, In Acticulty seres s. Fezzo zn>ret Reactivity This is because Ecore ad [Ar]3d452 Zn = [Ar]3d10452 very stable, fully belled &.c now when loose le Eci fet a [Ar] 3 de us' antal Ar] 3410 45 ки Nowe we co are converting an inte the we are disturbing stable ec of an ow and converting into ant so i need large amount of energy to do tha's That's why Reacterulty of fe> an acc. to I & table.