The boiling points of the noble gases increase down the group as follows: He, 4.2; Ne, 27.1; Ar, 87.3; Kr, 119.7; and Xe, 165 K. What would you predict to be the boiling point of radon?
CHMY 141 Notes Lesson30,31,33 Lesson 30 How can the Three-Dimensional Arrangement of Atoms in Molecules be Predicted ● Moleculargeometry:themoreprecisetermusedtodescribetheshapeofamolecule ● ValenceShellElectron-PairRepulsionTheory,VSEPR ○ ThebasicideaofVSEPRisthattheelectronpairswedrawinLewisdiagramsrepeleachotherinrealmolecules.Therefore,theydistributethemselves inpositionsaroundthecentralatomthatareasfarawayfromeachotheraspossible ● Electron-pairgeometry:thearrangementofelectronpairsofamolecule ● electron-pairangle:theangleformedbyanytwoelectronpairsandthecentralatom ● Moleculargeometrydescribestheshapeofamoleculeandthearrangementofatomsaroundacentralatom ● Bondangle:thebondanglebetweentwobondsformedbythesamecentralatom ● Experi