CHM 1321 Study Guide - Midterm Guide: Atomic Orbital, Newman Projection, Cyclohexane Conformation

• School: University of Ottawa
• Department: Chemistry
• Course: CHM 1321
• Professor: William Ogilvie

Document Summary

Periodic trends: electronegativity increases to the right and up, atomic size increases to the left and down. C, then h, then the others in alpha order: condensed. Need to know max # of bonds. Ch3ch2ch2ch3 chain of 4 carbons, the hs are connected to their respective c: mix & match. Ch3 o h h listed after non-h atom are connected to that atom. Parentheses: ch3ch(ch3)2 2 ch3 groups connected to ch. Add extra e- to structure most electronegative atoms first, stop when octet full. Subtract 2 e- from total for each bond. Group # - # of bonds - # of non-bonded e- Make extra bonds by combining e- from atoms w/ adjacent + atoms w/ incomplete octets. H is attached to o (acid is listed 4) Orbital region in space around atoms where probability of finding e- is high: atomic orbitals. Bonds formed by mixing atomic orbitals to get molecular ones (bond = molecular orbital)