Part a consider the structure of the amino acid

Part A
Consider the structure of the amino acid alanine. Indicate the hybridization about each interior atom.
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Hint 1. Identify the electron geometry of each interior atom
An approach to assign a hybridization scheme is to determine the electron geometry of each interior atom. The five VSEPR electron geometries correspond
to the five main types of atomic orbital hybridization. Identify the electron geometry for each interior atom in the alanine structure.
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ANSWER:
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sp
2
BF
3
p
π : B( p ) − F( p )
Empty orbital
sp 2
Empty orbital
p
Lone pair in orbital
p
σ : B( s ) − F( p )
σ : B( p ) − F( p )
σ : B( s ) − F( p ) p 2
Lone pair in orbital
sp
2
VSEPR and MO Diagrams Workshop Activity - April 22nd
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ANSWER:
Correct
Assign the hybridization scheme from the electron geometry of interior atoms (determined in the hint for this part). The carbon bonded to three atoms
and one atom has a tetrahedral electron geometry and, therefore, hybridization. The carbon bonded to two atoms, one atom, and one atom
has a tetrahedral electron geometry and, therefore, hybridization. The nitrogen bonded to two atoms and one atom has a tetrahedral electron
geometry and, therefore, hybridization. The carbon bonded to two atoms and one atom has a trigonal planar electron geometry and, therefore,
hybridization. The oxygen bonded to one atom and one atom has a tetrahedral electron geometry and, therefore, hybridization.
Exercise 11.68 - Enhanced - with Feedback
MISSED THIS? Read Section 11.7 ( Pages 457 - 470 ) ; Watch KCV 11.7 , IWE 11.8 .
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H
C sp
3
C H N
sp 3 H C
sp
3
O C
sp 2 H C sp 3
trigonal planar
octahedral
linear
tetrahedral
trigonal planar
tetrahedral
tetrahedral
tetrahedral
tetrahedral
sp
sp
2
sp
3
VSEPR and MO Diagrams Workshop Activity - April 22nd
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