VSEPR Theory, Polarity & Intermolecular Forces Flashcards
What is electronegativity?
Electronegativity is the tendency for an element in a covalent bond to attract the electrons.
What does it mean if an element is more electronegative?
If an element is more electronegative, it means that it will hold the electrons closer to itself.
What is polarity?
Polarity means that there is a partial negative/positive charges in a molecule.
When is a covalent compound polar?
A covalent compound is polar if one part of the compound has a stronger electron pull than the other. Not symmetrical and a diff of 0.5+.
What are the partial charges symbol?
delta
Does polarity determine whether a molecule dissolves with water?
Yes. Water is polar and dissolves other polar molecules. Like dissolves like.
What is a hydrophilic molecule?
It loves water.
What is a hydrophobic water?
It has a fear of water.
When does a bond have dipole-dipole?
When there is a difference in the pull of electrons within the molecule so any molecule that is polar.
What are intermolecular forces?
Intermolecular forces are the bonds between atoms in a molecule. They are present in all molecules and the strength of them vary depending on the polarity of the molecule .
What is a dispersion force?
Dispersion force occurs between non-polar molecules. It is v weak because the dipole moment is not permanent.
What is dipole-dipole?
Dipole-dipole attractions occur between polar molecules that have a permanent dipole. Since the dipole permanent, it is stronger.
What is hydrogen bonding?
Hydrogen bonding is when hydrogen bonds with FON. It is the strongest bond because the difference between the electronegativities.
What is the strongest type of intermolecular force/bonding and why?
Hydrogen bonding is the strongest because of the large difference/change in electronegativity.
What is the weakest type of intermolecular force and why?
Dispersion force is the weakest force because the dipole moment from more electrons being on one side is only temporary.
