Electrons, Bonds And Molecular Properties Worksheet With Answer Key Page 7
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CHAPTER 1
1.23.
2
sp
H
H
O
sp
C
C
C
C
C
H
H
2
sp
C
sp
a)
b)
H
H
1.24.
H
H
H
C
C
C
H
c < b < a
H
C
C
H
C
C
H
a is the longest bond
c
H
and c is the shortest bond
H
H
b
a
1.25.
a) The nitrogen atom has three bonds and one lone pair, and is therefore trigonal
pyramidal.
b) The oxygen atom has three bonds and one lone pair, and is therefore trigonal
pyramidal.
c) The boron atom has four bonds and no lone pairs, and is therefore tetrahedral.
d) The boron atom has three bonds and no lone pairs, and is therefore trigonal
planar.
e) The boron atom has four bonds and no lone pairs, and is therefore tetrahedral.
f) The carbon atom has four bonds and no lone pairs, and is therefore tetrahedral.
g) The carbon atom has four bonds and no lone pairs, and is therefore tetrahedral.
h) The carbon atom has four bonds and no lone pairs, and is therefore tetrahedral.
1.26.
O
H
O
H
All carbon atoms in this molecule are tetrahedral
C
except for the highlighted carbon atom,
H
C
C
H
which is trigonal planar.
H
C
C
H
N
The oxygen atom (of the OH group)
H
H
has bent geometry,
C
and the nitrogen atom is trigonal pyramidal.
H
H
(a)
H
H
H
All carbon atoms are tetrahedral
C
H
except for the carbon atoms highlighted,
N
H
which are trigonal planar.
H
H
C
N
H
H
C
C
O
The oxygen atom and the highlighted
nitrogen atom have bent geometry,
C
C
H
and the other nitrogen atom is trigonal pyramidal.
H
C
H
(b)
H
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