CHEM261 Study Guide - Midterm Guide: Trigonal Planar Molecular Geometry, Phenyl Group, Alkyl

• School: University of Alberta
• Department: Chemistry
• Course: CHEM261
• Professor: David Clive

Document Summary

Single bond: double bond: ethylene formal aldehyde: ch2o. Number of double bond equivalent: 1= one ring, double bond 2=2 rings, 2 double bonds, 1 triple. Ionic bond: na --> e( na ) cl --> e( cl ) Atomic orbital: volume of space with high probability of finding an electron 1s,2s,2p, 3p,4s . Formal charges: the hypothetical charge that would result if all bonding e- are shared equally. Formula: (#of ve in a free atom) (# of be in bonded atom) Oxidation state: the hypothetical charge that would result if all binding e- are assigned. Formula: (# of be in a free atom) (# of be in a bonded atom) Increase stability to delocalize, can"t localize anion, decrease stability. Summary of hybridization: sp: linear geometry 180, alkynes, at each triple bond of c, 2s hybrid and 2p hybrid, sp2: trigonal planar 120, allene, at each double bond, 3s, 1p, sp3: tetrahedral 109. 5, alkanes, 4s.