Lacey_Che131_S2012_Lect-25s

Lacey_Che131_S2012_L - ec 5 Periodic TrendsLec 25 Periodic TrendsRoy A Lacey Stony Brook University Che 131 Spring 20121Electron enter and fill

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: ec- 5: Periodic TrendsLec 25: Periodic TrendsRoy A. Lacey, Stony Brook University; Che 131, Spring 20121Electron ConfigurationsElectrons enter and fill orbitals according to four rules:Pauli Exclusion PrincipleOrbitals can contain a maximum of two electrons which must be of opposite spin.Aufbau or Build-up PrincipleElectrons enter and fill lower energy orbitals before higher energy orbitals. Hund's Ruleelectrons will enter the orbitals one-at-a-time to maximize degeneracyMadelung's RuleOrbitals fill with electrons as n+lElectrons can not have the same four Roy A. Lacey, Stony Brook University; Che 131, Spring 20122quantum numbersElectron ConfigurationsElectron configurations are reflected in the layout of the periodic tableRoy A. Lacey, Stony Brook University; Che 131, Spring 20123The electron configuration for Ca is ?Ca Ca [ArAr]4s]4s21s1s22s2s22p2p63s3s23p3p6 6 4s4s2 2 Roy A. Lacey, Stony Brook University; Che 131, Spring 20124Periodic TableRoy A. Lacey, Stony Brook University; Che 131, Spring 20125Periodic TableRoy A. Lacey, Stony Brook University; Che 131, Spring 20126Periodic properties reflect electronic structurePeriodic Trends`The size of an atom influences both physical and chemical properties....
View Full Document

This note was uploaded on 03/29/2012 for the course CHE 131 taught by Professor Kerber during the Spring '08 term at SUNY Stony Brook.

Page1 / 6

Lacey_Che131_S2012_L - ec 5 Periodic TrendsLec 25 Periodic TrendsRoy A Lacey Stony Brook University Che 131 Spring 20121Electron enter and fill

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online