(a) Interpretation: The molecular formula and the non-oxygen atom of each oxide (which forms out of second and third row elements: C,N,O,F,Si,P,S,Cl ) should be determined. Concept introduction: Oxygen forms many oxides with groups of 4A , 5A , 6 A and 7A in the periodic table. The molecular structure and bonding are different in each group as the number of electrons in the outermost shell that participate in bonding (valence electrons) is different.
(a) Interpretation: The molecular formula and the non-oxygen atom of each oxide (which forms out of second and third row elements: C,N,O,F,Si,P,S,Cl ) should be determined. Concept introduction: Oxygen forms many oxides with groups of 4A , 5A , 6 A and 7A in the periodic table. The molecular structure and bonding are different in each group as the number of electrons in the outermost shell that participate in bonding (valence electrons) is different.
Solution Summary: The author explains that the molecular formula and the non-oxygen atom of each oxide should be determined.
The molecular formula and the non-oxygen atom of each oxide (which forms out of second and third row elements: C,N,O,F,Si,P,S,Cl ) should be determined.
Concept introduction:
Oxygen forms many oxides with groups of 4A, 5A, 6A and 7A in the periodic table. The molecular structure and bonding are different in each group as the number of electrons in the outermost shell that participate in bonding (valence electrons) is different.
Interpretation Introduction
(b)
Interpretation:
Electron-dot structures of each oxide should be drawn and the availability of resonance structures for any of the oxides should be determined.
Concept introduction:
Electron-dot structures are used to represent a molecule’s bonding (by lines) and lone electrons that do not participate in bonding (by dots). For some molecules, there are several valid electron-dot structures which are known as ‘resonance’ structures.
Q3: Describes the relationship (identical, constitutional isomers, enantiomers or diastereomers)
of each pair of compounds below.
ག
H
CH3
OH
OH
CH3
H3C
OH
OH
OH
//////////
C
CH3
CH3
CH3
CH3
H3C
CH 3
C/III.....
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COOH
H
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H
2
OH
HO
CH3
HOOC
H
CH3
CH3
CH3
Br.
H
H
Br
and
H
H
H
H
Q1: For each molecule, assign each stereocenter as R or S. Circle the meso compounds. Label
each compound as chiral or achiral.
OH
HO
CI
Br
H
CI
CI
Br
CI
CI
Xf x f g
Br
D
OH
Br
Br
H₂N
R.
IN
Ill
I
-N
S
OMe
D
II
H
CO₂H
1/111
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These are synthesis questions. You need to show how the starting material can be converted into
the product(s) shown. You may use any reactions we have learned. Show all the reagents you
need. Show each molecule synthesized along the way and be sure to pay attention to the
regiochemistry and stereochemistry preferences for each reaction. If a racemic molecule is made
along the way, you need to draw both enantiomers and label the mixture as "racemic".
All of the carbon atoms of the products must come from the starting material!
?
H
H
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