Unit 1: Intermolecular Bonding Flashcards
How strong are LDFs compared to PD-PDi and H bonding?
Not very strong. They are the weakest of all the Wan der Waals
Do all atoms have LDFs?
yes
How is a temporary dipole made in LDFs?
The electrons in the atom
This causes the electrons to move away from nearby atom causing a negative change
Thus a temporary dipole is induced
What is LDF?
Londen Dispersion Forces
What is PD-PDi?
Permanent dipole- permanent dipole interactions
What kind of molecules have PD-PDi?
polar molecules
How strong are PD-PDi’s compared to LDFs and H bonding?
In the middle
How strong is H bonding compared to LDFs and PD-PDi?
Very strong. They’re the strongest Wan Der Waals but weaker than covalent bonds.
Which elements are involved in H bonding?
Oxygen, Nitrogen and Fluorine
Why is does NOF create H bonding?
Because H has an electronegativity of 2.2 while NOF have a high electronegativity so the polarity is very high