Structure Flashcards
How is the steric number determined?
The number of sigma bonds plus the number of lone pairs.
What is the steric number used for?
It can be used to tell you what sp hybridization will be.
Atoms most affected by hydrogen bonding
FON
Fluoride, oxygen, nitrogen
Less polar the molecule the weaker/stronger the intermolecular forces are.
Weaker
Weaker intermolecular forces, high or low BP?
Lower
What are isomers?
Same formula, different structure.
Is there rotation around a sigma bond?
Yes
Is there rotation around a pi bond?
No
Elements most associated with hydrogen bonds?
FON
Fluorine, Oxygen, Nitrogen
Relationship between polarity, molecular forces and boiling point?
The less polar the molecule, the weaker the intermolecular forces (between the molecules) and the lower th bp.
In non polar molecules what is the effect of longer carbon chains and branching on bp.
Longer chains highrr bp. Branching lowers bp.
Polarity and solubility
Polar solvents dissolve polar/ionic compounds, non polar dissolve non polar.
What is the empirical formula?
The chemical formula as the simplest ratio of atoms.
Reduction reaction involves loss and gain of what atoms?
Loss of an oxygen and the gain of a hydrogen
An oxidation reaction involves what change in chemical formula?
Loss of a hydrogen and the gain of an oxygen
