CHM135H1 Lecture Notes - Lecture 1: Valence Bond Theory, Pauli Exclusion Principle, Octet Rule

568 views3 pages
12 Nov 2016
School
Department
Course
avalack09 and 39671 others unlocked
CHM135H1 Full Course Notes
90
CHM135H1 Full Course Notes
Verified Note
90 documents

Document Summary

Atomic mass: average weighted mass (of different isotopes) Tetravalent- 4 bonds: 4 valence electrons available for bonding, most stable configuration. Quantum mechanics: describes electron energies & locations with wave functions. Psy2: where electrons are most likely to be found. Electron cloud has no specific boundary- only most probable areas. 4 different orbitals- s, p, d, f. Orbitals grouped in shells of increasing size & energy: s- spherical, p- dumbbell, d- cloverleaf. Atomic structure: electron configurations: aufbau"s principle: lowest-energy orbitals fill first, pauli exclusion principle: only 2 electrons in each shell & have opposite, hund"s rule: fill empty shells w/ 1 electron first. Possible to promote an electron from lower energy shell to higher. Covalent bonds: bonding through sharing electrons between two atoms: dashed bond- into the paper, wedged bond- out of the paper, line bond- in the plane of the page. Kekule structures: line b/w atoms indicating electron sharing.

Get access

Grade+20% off
$8 USD/m$10 USD/m
Billed $96 USD annually
Grade+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
40 Verified Answers
Class+
$8 USD/m
Billed $96 USD annually
Class+
Homework Help
Study Guides
Textbook Solutions
Class Notes
Textbook Notes
Booster Class
30 Verified Answers

Related Documents