Lecture 19

L1 /

CH1012

S-P ORBITAL MIXING.h

•No s-p mixing (E 2s << E2p)

If there are some filled 2p orbitals eg. O,F,Ne

1. Es1s < Es2s

2. Es2s < Es2s*

3. Es2px < Ep2py, z (end / end overlap is greater)

s-p Mixing (E 2s ó E2p)

Only 1/2 filled 2p orbitals eg. B,C,N

reduced repulsion in p AOs E is lowered

1. Es2s decreases due to mixing 2s+2px

2. Es2px raises due to mixing

O 2s22p4

N 2s22p3