Intermolecular forces Flashcards
What are intramolecular forces?
forces between atoms and ions WITHIN molecule
Give example of intramolecular forces
Ionic bonds, covalent bond
Are intramolecular forces strong or weak
strong
Are intermolecular forces strong or weak
weak
What are intermolecular forces
forces BETWEEN molecules
Give 3 examples of intermolecular forces
London dispersion, dipole-dipole, hydrogen bonds
State 2 facts about London dispersion forces
-Weakest intermolecular forces
-The bigger the molecule the stronger the force
State 2 facts about dipole-dipole
-second strongest intermolecular force
-force of attraction between opposite charge ends.
state 2 facts about hydrogen bonding
-strongest intermolecular force
-only in f-h,o-h and n-h bonds
What has the lowest vapor pressure
Hydrogen bonds
what is electron pair repulsion
assumes that valence orbitals occupied by a pair of electrons are “full” and will repel any other full valence orbital.
why is symmetry non polar
because bond dipoles balance canceling any molecular polarity
is bent polar or nonpolar and why
polar bond dipoles combine to produce non zero resultant dipole.
Why is it that the larger the molecule the stronger the London force
because the molecules have a greater
number of electrons per molecule
If it has lone pairs it is…
Bent
