Chem 115 1nd Edition Lecture 24Outline of Last LectureI. Hund’s RuleII. Partial Orbital DiagramIII. Inner ElementsIV. Outer ElementsOutline of Current LectureI. Trends in Atomic SizeII. Trends in Ionization EnergyIII. Trends in Electron AffinityIV. Behavior Patterns for IE and EAV. Metallic BehaviorCurrent LecturePmpecameters1012 pm = 1 meterTrends in Atomic Size- Atomic size increases as n increases- Atomic size decreases as effective nuclear charge increases- Increases down a group- Decreases across a periodTrends in Ionization Energy- Ionization energy: energy required for complete removal of 1 mole of electrons from 1 mole of gaseous atoms/ions- Low IEcations- High IEanions- Decreases down a group- Increases across periodTrends in Electron AffinityThese notes represent a detailed interpretation of the professor’s lecture. GradeBuddy is best used as a supplement to your own notes, not as a substitute.- Electron affinity: energy change that occurs when 1 mole of electrons added to 1 mole of gaseous atoms/ions- Low EAcations- High EAanionsBehavior Patterns for IE and EA- Reactive nonmetalshigh IE’s and negative EA- Reactive metalslow IE’s and negative EAMetallic Behavior- Shiny solids with high melting points- Easily oxides- Strong reducing agents- Good conductors of heat and electricity- From ionic oxides which are basic in aqueous solutions- Same trend as atomic size- Amphoteric oxidesact as acid/base- From covalent oxides while are acidic in aqueous solutions- Isoelectronicsame
View Full Document
Unlocking...