Chem 161 Chapter 9 Molecular Geometry Worksheet - Shape Determines Function Page 21
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403. Electron configuration for C (using core notation): ___________________
4. Draw the atomic orbital diagram
5. Promote electrons in the atomic orbital
for the valence electrons in C:
diagram, so C can form 4 bonds.
Although C now has unpaired electrons in 4 orbitals for bonding, the atomic orbital diagram
in step 5 indicates that three of the C–H bonds (from 2p) should be the same, but one (from
2s) should be different.
But VSEPR predicts CH
is tetrahedral and experimental evidence indicates that the four
4
C–H bonds are equivalent
3
→ hybridize one 2s and three 2p orbitals to get 4 equivalent sp
hybrid orbitals
Show the atomic orbital diagrams for the hybridization below:
hybridization
"
" " " " "
→
€
atomic orbital diagram before hybridizing
atomic orbital diagram after hybridizing
3
The hybridization of one s and three 2p orbitals to form four sp
hybrid orbitals
CHEM
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