2.4 Flashcards
Dipole-Dipole Attraction
The partial positive and partial negative ends of polar molecules are attracted to each other.
Hydrogen Bond
A particularly strong Dipole-Dipole Bond in which the difference in electronegativity is larger, for example, O-H N-H, F-H.
London Dispersion
While in orbit, there are more electrons on one side of the atom, giving it a partial negative and positive side. This allows for temporary, and weak, Dipole-Dipole bonds.
Covalent Bond
Polar- Unequal sharing of electrons
Nonpolar- Equal sharing of electrons
Ionic
The transfer of electrons, the atoms become ions and then opposites attract.
What is the ranking of intermolecular forces, from strongest to weakest?
Covalent, Ionic, Hydrogen, Dipole-Dipole, London Dispersion
Ionic
What is the strongest intermolecular force?
Covalent Bonds
What is the weakest intermolecular force?
London Dispersion Force
How do you determine whether a molecule is Polar or non-polar based on structure?
You look at the bonds, if there are polar bonds look at the Dipole arrows, if they are asymmetric then it is Polar.
What kind of intermolecular forces can Water form with more Water?
Hydrogen Bonds
What kind of intermolecular force can form between two Polar molecules?
Dipole-Dipole
What sort of intermolecular force can form between ANY molecules?
London Dispersion