University:
Mississippi College
Course:
CHE 141 | General Chemistry I
Academic year:

2022
Views:

379

Pages:

3
Author:

Abby D.

Ch.9 cont.Ae-e-config.7 vale'svalence e-'s- (the las+2) or (one)CI:152522p35235P,The e 's in orbitals withcore e-'svalence e-'sthe highest "n value" (3) in this)2nd1st(For main group elements)core ets -Transition Metals, you also in cludeAll the Other e'-s.the outer 'd's.on the inside OF the atom'sTi: 152252 2 3se- cloud (thus, held morecore e-'s4vale'stightly onto the atom)on the outside of the atoms e-the refure(..) not availablecloud. (thus held more loosely)for transfer or sharing w/involved w/ bonding w/othernearby atoms,so. not inv-atoms.olved in bonding.F: 1522528 key Pt: Elements in the same group/columnvale-s have the same # and type of val. e'sSince val e-'s are the ones important inPeriod #- correspondsbonding(& many other chem. proper ties!!), thisto the highest thexplains why the elements in the same groupvalue in theact the same!!e- config!I7ASGroup # = # OF Vale-'s on22that atomColumns3CISd block-IMonlyP blockF: 152520(n-1).e- configblockex45-1=3d(last 6 columns)P: 152252 35 (n-1)last nvalu210 Columnsthe last e - addedFe: 1525 2p63 3P 2 3dis Sex152corresponds tocingoure- config)the max He-'s thatwasina Porbitalsublevel can hold!!6 columnsf block14columnsZ 15Periodic PropertiesProgertes/characteristics of elements latoms that can bedetermined/ predicted sorely based on their position on thePer. table.Ilon Formation2Atomic Radiusland lonic Radius)3Ionization Energy4Electron Affinity5Metallic characterlon Formation: +1 1,+2,+3.etc."I" atoms tend to form lons that give the same e- configVOM.as their nearest noble gas. (v. Stable or bitals are full)AlkaliNa & Ne noblegasIE increasesmetalAr decreasesEAgets moreneg. (exothermic)MC decreasesAtomic Radius:rLi) Be Zeffincreas+Naknow the trendKThe way to measure physical size of an atom.Understand"Li15225'downwardNa1522520635 his las e- is in a larger or bital3acrosssmallerheavierKeypt: The vale- is "shielded" from the full15325'LivsBe15252pull coming from the nucleus!"Effective nucleur charge" Zeff - #p - # coree-'s4525Ionic Radius:2+always smaller than2eff=3-2 H2eff-4-2CausCaparents(cation)BrvsBrendo, + KJIonizationEnergy:Energy required to remove an e-from an atom.Be12NaJ2is Electron Affinity: The E associated wl adding an extrae- to an atom ex: halogens.Metallic character. Does it have "c lassic "metal metal characteristicslike shing ness, conductivity, malleability.CSIGeE+,St,1+ inditional notsrpb249 A3JMofA78mistosinol22