Chapter 9: Valence Bond Theory
1) (x ) I 2022
, valence Bond Theory,vBi)
molecule
-identify 5 or bonds in a given
~
relate this to USEPR
~
Hybridization
Bond forms due to overlap
↳ Sigma bond
↳ X2 pi bond
· Each covalent bond like an idependant species
↳) treat each covalent bond as an independant interaction
↳) only consider paramagnetic species in this chapter
↳> don't think about
antibonding, bonding here
Orbitals in UBT and MO theory have the same shape no: molecular orbital
but are labelled DIFFERENTLY
NO: O IS
example:
VBT:5 (Is-1s) write which cribals have overlapped
orbitals enough
Hetero nuclear: that are close in
energy
dash like
different colors represents
that
represent bonding theve
was nO
over 10p
-
T(Gp2-Gp2)
· (py -<py)
/VBT notation)
TCGp2 -2pn)
2
2 BI
steps on how to drow valence bond diagram:
1 write types of atom
2P4
2. draw orbitals /2s, <p) X
↳) draw is line lower than 2p
CP2L
3. Fill lower energy orbitals first
2
4 satisfy nunds rule still all P orbital first 1)
key Ideas
· one bond will Always bonds
be sigma rest will be pi
I
1) (x ) I 2022
, valence Bond Theory,vBi)
molecule
-identify 5 or bonds in a given
~
relate this to USEPR
~
Hybridization
Bond forms due to overlap
↳ Sigma bond
↳ X2 pi bond
· Each covalent bond like an idependant species
↳) treat each covalent bond as an independant interaction
↳) only consider paramagnetic species in this chapter
↳> don't think about
antibonding, bonding here
Orbitals in UBT and MO theory have the same shape no: molecular orbital
but are labelled DIFFERENTLY
NO: O IS
example:
VBT:5 (Is-1s) write which cribals have overlapped
orbitals enough
Hetero nuclear: that are close in
energy
dash like
different colors represents
that
represent bonding theve
was nO
over 10p
-
T(Gp2-Gp2)
· (py -<py)
/VBT notation)
TCGp2 -2pn)
2
2 BI
steps on how to drow valence bond diagram:
1 write types of atom
2P4
2. draw orbitals /2s, <p) X
↳) draw is line lower than 2p
CP2L
3. Fill lower energy orbitals first
2
4 satisfy nunds rule still all P orbital first 1)
key Ideas
· one bond will Always bonds
be sigma rest will be pi
I
