Covalent Bond Facts:
• Sharing of electrons, • Between molecules of elements: (Cl2, H2, O2) • Single, Double or Triple. • CAN be POLAR (atoms shared are different. HCL) • CAN be NON-Polar (Atoms shared are same. H2)
Intramolecular Forces
Force WITHIN Molecules.
• Covalent bond.
Intermolecular Forces:
DISPERSION Forces:
Are very weak forces, temporarily attracted due to electron clouds.
Intermolecular Forces:
Dipole-Dipole:
Stronger than dispersion,
Permanent attractive forces between + and – ends of a POLAR molecule,
Due to even distribution of charges.
Intermolecular Forces:
Hydrogen Bonding:
VERY strong between F, O, and N.
H+(FON)
Molecular Forces:
Strength chart:
Dispersion
(All)
|
Dipole-Dipole
(Polar)
|
Hydrogen Bonds
(F, O, N)