Chapter 1 - Structure and Bonding Flashcards
Isomer
same formula, different connectivity
Resonance
same atom placement, different electron arrangement
Linear Bond
180°
2 groups on central atom
Trigonal Planar Bond
120°
3 groups on central atom
Tetrahedral Bond
109.5°
4 groups on central atom
SP3 hybridization
4 groups on carbon atom
single bond: one σ bond
tetrahedral (109.5°)
SP2 hybridization
3 groups on carbon atom
double bond: one σ bond + one π bond
trigonal planar (120°)
SP hybridization
2 groups on carbon atom
triple bond: one σ bond + two π bonds
linear (180°)
Resonance Contributions
Major contributor contains fewer charges and more bonds
All other structures are minor contributors
List shortest to longest bonds
Triple –> Double –> Single
List weakest to strongest bonds
Single –> Double –> Triple