vocab ch 5 Flashcards
define the MO model
a model that regards a molecule as a collection of nuclei and e-‘s, where the e-‘s are assumed to occupy orbitals much as they do in the individual atoms (around the entire molecule) Differs from the LE model by assuming e-‘s are delocalized rather than always located between a given pair of atoms
define a bond order
an indicator of bond strength
define delocalized pi bonding
the e-‘s in pi MOs are delocalized above and below the plane of a planar molecule
a molecule is treated as a new entity in which model?
MO
what does the MO model correctly predict about molecules?
relative bond strength, magnetism and bond polarity
why is a bonding MO filled first?
the e-‘s can be at a lower E in the molecule than in separate atoms.
why do bonding MOs favor molecule formation?
the bonding MOs are lower E for the e-‘s than in the atoms separately
why is the bonding MOs lower in E for the e-‘s than in the atoms separately
the simultaneous attraction of the two nuclei
