Chem 161 Chapter 9 Molecular Geometry Worksheet - Shape Determines Function Page 22
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40–
3
To maximize the distance between e
’s in C, the four sp
orbitals in the C atom are oriented to be 109.5˚ away from one
another in three dimensions
tetrahedral shape (with 109.5˚ bond angles)
→
3
corresponding to four sp
orbitals oriented towards
the four corners of a 4-sided pyramid
3
The four hybrid sp
atomic orbitals for C are shown in blue below,
along with the four 1s orbitals for the four H atoms to form the
CH
molecule.
4
The C-H bonds are made from the electrons shared in the darker overlapping regions.
Case #4: PF
:
5
1. Draw the Lewis formula for the PF
molecule below:
5
Lewis formula
Sketch of molecule
2. PF
’s shape is ____________________________ and its bond angles are ____________.
5
Sketch the molecule above.
3. Electron configuration for P (using core notation): ___________________
CHEM
1 61:
C hapter
9
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