Question

PQ-28. Which pair of elements is listed in o which pair of elements is listed in order of decreasing first ionization energy! (A) Na, Mg (B) Mg, AI (C) Al, Si (D) Si, P -29. When the species F, Na', and Ne are arranged in order of increasing energy for the removal of an electron, what is the correct order? (A) F< Nat < Ne (B) Nat <Ne <F (C) F <Ne < Nat (D) Ne <F < Nat! I PO-30. The firat .

please explain! :)

Answer 1

pp-28. Jomisntiou energer isa peniodic proponty atomic elument in the peniodic forble. energyrisa peniadie pmoperty of Along a pomticularo now the ionizationu ene incneases from left to might side Because the atomie numbero of thealonert (reuclears change) incmeases by one cunit forom Left to mightin sac elemert. fo. 14 15 PT ionizationo enangr is expeckd to increowe' -in the dinectini froom Left to minght. the ionizotim enengy depends ow frem cohich Onbital the electnon is ionized i.e, natune of the osbital : s,p, ond onbital ete ond the dlectonic State of the onbital(half filled oor full filed elactronic state ete.). S-onbital nesides mone close to the nuclaus So, S-elbebnens expericacormenie Hae neuclaars change followed by p-sd-adf- Ombital Subequently. · Again half filled or ful filled elechronie Confiqunation has entua stobility via enchange enenota: Thus, half Filled or fullfilled dachronie State mequimes highors amount of enerngyto strongen effective

ionize on eleehren from that onbital leading to much highers an anomolous behaviour is obsenved in often Foro this neasow lonizatian energ the peniodic property coith espect to its nommal permodic te trends. An ouro Case: Valance elachronic Confiqamation I Na 3st 38 a full filed configeration). 38 3p- 12 13 AL - 353 14 Si 3 3p3 half Alled Stololiced elactnonie Configermationd. is wirittern thondero of decmeasing 15 Theus, for the pairo, MgrAL ionization Becaute frem the eloctnenie Confiumationof AL the lastouters most electood ides in the 3p orloital in Comparte to -the fullfilled 38 ontital in Cade of My. Theis Mgis axpeeted to piaress highers imbation enerngycoithnespeetto AL.

Omengonant of -analactoron from thespacies PQ. 29. The Comreet ondero of amrangone ionization) and Ne in ineneasing enengy will be. () FOLNR <Nat, Explanatim - Herre in gach atom o the Rlectronic Comfigemetion is Sama , Is 252p6 2 (Ne] ie, the outers mast onbital from cohich the electnon is iomized is Same in al the threee specijes i.e, the invanient 2p onbital. Heme the vonnition of ionizatiow enengegin the three Specier deperds On thairr effective muclears change (2*). oN Pemoved f Thees Na has atemie numberr Nat IL i.e, it Geast: Contoines Il positiveley charageprotono in the nuclaus folleco edby Nehoving 1o protories and f Consist of only 9 protorw in ifs nuckus. - Highors the effective rucloorm change, higlere coill bethe bindingg of e the elacbronus nithe valanee ambifaf . 01