Ch 9+10 (MO And VB Theory) Flashcards
Hybrid of steric number =3
Sp^2
Hybrid of steric number =4
Sp^3
Hybrid of steric number =5
sp^3d
Hybrid of steric number =6
sp^3d^2
Steric number =
of bonded atoms + # of lone pairs
Ideal bond angle for linear geo
180
Ideal bond angle for trigonal planar
120
Ideal bond angle for bent(2 bonded, 1 lone pair)
Ideal bond angle for tetrahedral
109.5
Ideal bond angle for trigonal pyramid
109.5
Idea bond angle for (2 bonded, 2 lps)
109.5
Ideal bond angle for trigonal bipyramidal
90,120,180
Ideal bond angle for seesaw
90,120,180
Ideal bond angle for t shaped
90,180
Ideal bond angle for octahedral
90,180
Ideal bond angle for square pyramidal
90,180
Ideal bond angle for square planar
90,180
3-D drawings wedges=
Outwards
3-D drawings solid line
Same plane
3-D drawings dotted line
Into page
Bond order =
1/2(#bonding electrons - anti bonding electrons)
O,F,Ne molecular orbital is more stable
Sigma 2p is stable; so lower energy
B,C,N molecular orbital more stable?
Pi 2p is more stable; so it’s lower energy
Molecular orbital configuration for B,C,N
(Sigma2s)(sigma star 2s)(pi2p)(sigma 2p)(pi star 2p)(sigma star 2p)