chem 200 answer key maganda
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![Page 1: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/1.jpg)
Chapter 1: Multiple Choice Questions
Results
You have answered 1 out of 20 questions correctly.
Your percentage score is 5%.
Question 1
Which is the ground-state electronic configuration of chlorine?
Your answer:
c) 1s22s22p63s23p5
Feedback:
For electronic configurations of elements, see pp. 4-5.
Question 2
Which is the ground-state electronic configuration of Na+?
You did not answer the question.
Correct answer:
d) 1s22s22p6
Feedback:
In a cation, one electron is lost from the atom per positive charge. See pp. 6-7.
Question 3
Which of the following atoms or ions has the electronic configuration
1s22s22p63s23p6 ?
You did not answer the question.
Correct answer:
c) Cl-
Feedback:
The electronic configuration indicates a complete octet in the third shell and
corresponds to Ar. See pp. 4-7 and the periodic table at the front of the book.
Question 4
Which of the following elements is less electronegative than carbon?
You did not answer the question.
Correct answer:
![Page 2: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/2.jpg)
a) Si
Feedback:
For the electronegativity of elements, see p. 8.
Question 5
Which of the following bonds is the most polar?
You did not answer the question.
Correct answer:
b) O-H
Feedback:
Compare the electronegativities of the bonded atoms: see p. 10 for the
polarities of bonds.
Question 6
Which is a correct Lewis structure for carbon dioxide, CO2?
You did not answer the question.
Correct answer:
a)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 7
Which is a correct Lewis structure for carbonic acid, H2CO3?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 8
Which is a correct Lewis structure for hydrogencarbonate ion, HCO3-?
![Page 3: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/3.jpg)
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom. The carbon atom
in structure (d) has more valence electrons than an octet.
Question 9
Which is a correct Lewis structure for hydrogen cyanide, HCN?
You did not answer the question.
Correct answer:
d)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 10
Which is a correct Lewis structure for nitric acid, HNO3?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. The nitrogen atoms in structures (a) and (b) contain more
valence electrons than an octet. Also, confirm the number of lone pairs on each
atom.
Question 11
Which of the following does not have the ground-state configuration 1s22s22p6 ?
You did not answer the question.
Correct answer:
![Page 4: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/4.jpg)
c) Cl-
Feedback:
This electronic configuration indicates a complete octet of the second shell. For
the electronic configurations of atoms and ions of elements, see pp. 4-7.
Question 12
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) Cl
Feedback:
For the electronegativity of elements, see p. 8. Elements at the upper right in
the periodic table have higher electronegativities.
Question 13
Which of the following elements is the most electropositive?
You did not answer the question.
Correct answer:
a) B
Feedback:
For the electronegativity of elements, see p. 8. Elements at the lower left in the
periodic table have lower electronegativities (are more electropositive).
Question 14
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) F
Feedback:
For the electronegativity of elements, see p. 8. This question is about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 15
Which of the following elements is the most electropositive?
![Page 5: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/5.jpg)
You did not answer the question.
Correct answer:
d) I
Feedback:
For the electronegativity of elements, see p. 8. This question is also about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 16
Which of the following compounds has an ionic bond?
You did not answer the question.
Correct answer:
b) NH4Cl
Feedback:
Compare the electronegativities of the main elements involved: see pp. 8-9 for
ionic bonds.
Question 17
Which of the following molecules does not have a dipole moment?
You did not answer the question.
Correct answer:
d) CCl4
Feedback:
For dipole moments, see pp. 10-11. Dipole moments are determined not only by
the polarities of bonds but also by the symmetries of molecules.
Question 18
Which of the following contains an atom (other than hydrogen) which lacks an
octet of valence electrons?
You did not answer the question.
Correct answer:
c) BH3
Feedback:
Confirm the Lewis structure of each species.
Question 19
![Page 6: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/6.jpg)
Which of the following is a correct Lewis structure of diazomethane, CH2N2?
You did not answer the question.
Correct answer:
d)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 20
Which of the following Lewis structures of protonated methanamide is
incomplete?
You did not answer the question.
Correct answer:
b)
Feedback:
Complete correct Lewis structures should show all lone pairs.
Chapter 1: Multiple Choice Questions
Results
You have answered 1 out of 20 questions correctly.
Your percentage score is 5%.Question 1
Which is the ground-state electronic configuration of chlorine?
Your answer:
c) 1s22s22p63s23p5
Feedback:
For electronic configurations of elements, see pp. 4-5.
![Page 7: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/7.jpg)
Question 2
Which is the ground-state electronic configuration of Na+?
You did not answer the question.
Correct answer:
d) 1s22s22p6
Feedback:
In a cation, one electron is lost from the atom per positive charge. See pp. 6-7.
Question 3
Which of the following atoms or ions has the electronic configuration
1s22s22p63s23p6 ?
You did not answer the question.
Correct answer:
c) Cl-
Feedback:
The electronic configuration indicates a complete octet in the third shell and
corresponds to Ar. See pp. 4-7 and the periodic table at the front of the book.
Question 4
Which of the following elements is less electronegative than carbon?
You did not answer the question.
Correct answer:
a) Si
Feedback:
For the electronegativity of elements, see p. 8.
Question 5
Which of the following bonds is the most polar?
You did not answer the question.
Correct answer:
b) O-H
Feedback:
Compare the electronegativities of the bonded atoms: see p. 10 for the
polarities of bonds.
![Page 8: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/8.jpg)
Question 6
Which is a correct Lewis structure for carbon dioxide, CO2?
You did not answer the question.
Correct answer:
a)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 7
Which is a correct Lewis structure for carbonic acid, H2CO3?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 8
Which is a correct Lewis structure for hydrogencarbonate ion, HCO3-?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom. The carbon atom
in structure (d) has more valence electrons than an octet.
Question 9
Which is a correct Lewis structure for hydrogen cyanide, HCN?
![Page 9: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/9.jpg)
You did not answer the question.
Correct answer:
d)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 10
Which is a correct Lewis structure for nitric acid, HNO3?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. The nitrogen atoms in structures (a) and (b) contain more
valence electrons than an octet. Also, confirm the number of lone pairs on each
atom.
Question 11
Which of the following does not have the ground-state configuration 1s22s22p6 ?
You did not answer the question.
Correct answer:
c) Cl-
Feedback:
This electronic configuration indicates a complete octet of the second shell. For
the electronic configurations of atoms and ions of elements, see pp. 4-7.
Question 12
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) Cl
Feedback:
![Page 10: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/10.jpg)
For the electronegativity of elements, see p. 8. Elements at the upper right in
the periodic table have higher electronegativities.
Question 13
Which of the following elements is the most electropositive?
You did not answer the question.
Correct answer:
a) B
Feedback:
For the electronegativity of elements, see p. 8. Elements at the lower left in the
periodic table have lower electronegativities (are more electropositive).
Question 14
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) F
Feedback:
For the electronegativity of elements, see p. 8. This question is about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 15
Which of the following elements is the most electropositive?
You did not answer the question.
Correct answer:
d) I
Feedback:
For the electronegativity of elements, see p. 8. This question is also about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 16
Which of the following compounds has an ionic bond?
You did not answer the question.
![Page 11: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/11.jpg)
Correct answer:
b) NH4Cl
Feedback:
Compare the electronegativities of the main elements involved: see pp. 8-9 for
ionic bonds.
Question 17
Which of the following molecules does not have a dipole moment?
You did not answer the question.
Correct answer:
d) CCl4
Feedback:
For dipole moments, see pp. 10-11. Dipole moments are determined not only by
the polarities of bonds but also by the symmetries of molecules.
Question 18
Which of the following contains an atom (other than hydrogen) which lacks an
octet of valence electrons?
You did not answer the question.
Correct answer:
c) BH3
Feedback:
Confirm the Lewis structure of each species.
Question 19
Which of the following is a correct Lewis structure of diazomethane, CH2N2?
You did not answer the question.
Correct answer:
d)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 20
![Page 12: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/12.jpg)
Which of the following Lewis structures of protonated methanamide is
incomplete?
You did not answer the question.
Correct answer:
b)
Feedback:
Complete correct Lewis structures should show all lone pairs.
Chapter 1: Multiple Choice Questions
Results
You have answered 1 out of 20 questions correctly.
Your percentage score is 5%.Question 1
Which is the ground-state electronic configuration of chlorine?
Your answer:
c) 1s22s22p63s23p5
Feedback:
For electronic configurations of elements, see pp. 4-5.
Question 2
Which is the ground-state electronic configuration of Na+?
You did not answer the question.
Correct answer:
d) 1s22s22p6
Feedback:
In a cation, one electron is lost from the atom per positive charge. See pp. 6-7.
Question 3
Which of the following atoms or ions has the electronic configuration
1s22s22p63s23p6 ?
You did not answer the question.
![Page 13: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/13.jpg)
Correct answer:
c) Cl-
Feedback:
The electronic configuration indicates a complete octet in the third shell and
corresponds to Ar. See pp. 4-7 and the periodic table at the front of the book.
Question 4
Which of the following elements is less electronegative than carbon?
You did not answer the question.
Correct answer:
a) Si
Feedback:
For the electronegativity of elements, see p. 8.
Question 5
Which of the following bonds is the most polar?
You did not answer the question.
Correct answer:
b) O-H
Feedback:
Compare the electronegativities of the bonded atoms: see p. 10 for the
polarities of bonds.
Question 6
Which is a correct Lewis structure for carbon dioxide, CO2?
You did not answer the question.
Correct answer:
a)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 7
Which is a correct Lewis structure for carbonic acid, H2CO3?
![Page 14: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/14.jpg)
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 8
Which is a correct Lewis structure for hydrogencarbonate ion, HCO3-?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom. The carbon atom
in structure (d) has more valence electrons than an octet.
Question 9
Which is a correct Lewis structure for hydrogen cyanide, HCN?
You did not answer the question.
Correct answer:
d)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 10
Which is a correct Lewis structure for nitric acid, HNO3?
You did not answer the question.
Correct answer:
![Page 15: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/15.jpg)
c)
Feedback:
See pp. 12-18. The nitrogen atoms in structures (a) and (b) contain more
valence electrons than an octet. Also, confirm the number of lone pairs on each
atom.
Question 11
Which of the following does not have the ground-state configuration 1s22s22p6 ?
You did not answer the question.
Correct answer:
c) Cl-
Feedback:
This electronic configuration indicates a complete octet of the second shell. For
the electronic configurations of atoms and ions of elements, see pp. 4-7.
Question 12
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) Cl
Feedback:
For the electronegativity of elements, see p. 8. Elements at the upper right in
the periodic table have higher electronegativities.
Question 13
Which of the following elements is the most electropositive?
You did not answer the question.
Correct answer:
a) B
Feedback:
For the electronegativity of elements, see p. 8. Elements at the lower left in the
periodic table have lower electronegativities (are more electropositive).
![Page 16: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/16.jpg)
Question 14
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) F
Feedback:
For the electronegativity of elements, see p. 8. This question is about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 15
Which of the following elements is the most electropositive?
You did not answer the question.
Correct answer:
d) I
Feedback:
For the electronegativity of elements, see p. 8. This question is also about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 16
Which of the following compounds has an ionic bond?
You did not answer the question.
Correct answer:
b) NH4Cl
Feedback:
Compare the electronegativities of the main elements involved: see pp. 8-9 for
ionic bonds.
Question 17
Which of the following molecules does not have a dipole moment?
You did not answer the question.
Correct answer:
d) CCl4
Feedback:
![Page 17: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/17.jpg)
For dipole moments, see pp. 10-11. Dipole moments are determined not only by
the polarities of bonds but also by the symmetries of molecules.
Question 18
Which of the following contains an atom (other than hydrogen) which lacks an
octet of valence electrons?
You did not answer the question.
Correct answer:
c) BH3
Feedback:
Confirm the Lewis structure of each species.
Question 19
Which of the following is a correct Lewis structure of diazomethane, CH2N2?
You did not answer the question.
Correct answer:
d)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 20
Which of the following Lewis structures of protonated methanamide is
incomplete?
You did not answer the question.
Correct answer:
b)
Feedback:
Complete correct Lewis structures should show all lone pairs.
![Page 18: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/18.jpg)
Chapter 1: Multiple Choice Questions
Results
You have answered 1 out of 20 questions correctly.
Your percentage score is 5%.Question 1
Which is the ground-state electronic configuration of chlorine?
Your answer:
c) 1s22s22p63s23p5
Feedback:
For electronic configurations of elements, see pp. 4-5.
Question 2
Which is the ground-state electronic configuration of Na+?
You did not answer the question.
Correct answer:
![Page 19: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/19.jpg)
d) 1s22s22p6
Feedback:
In a cation, one electron is lost from the atom per positive charge. See pp. 6-7.
Question 3
Which of the following atoms or ions has the electronic configuration
1s22s22p63s23p6 ?
You did not answer the question.
Correct answer:
c) Cl-
Feedback:
The electronic configuration indicates a complete octet in the third shell and
corresponds to Ar. See pp. 4-7 and the periodic table at the front of the book.
Question 4
Which of the following elements is less electronegative than carbon?
You did not answer the question.
Correct answer:
a) Si
Feedback:
For the electronegativity of elements, see p. 8.
Question 5
Which of the following bonds is the most polar?
You did not answer the question.
Correct answer:
b) O-H
Feedback:
Compare the electronegativities of the bonded atoms: see p. 10 for the
polarities of bonds.
Question 6
Which is a correct Lewis structure for carbon dioxide, CO2?
You did not answer the question.
Correct answer:
![Page 20: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/20.jpg)
a)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 7
Which is a correct Lewis structure for carbonic acid, H2CO3?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 8
Which is a correct Lewis structure for hydrogencarbonate ion, HCO3-?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. Confirm the number of lone pairs on each atom. The carbon atom
in structure (d) has more valence electrons than an octet.
Question 9
Which is a correct Lewis structure for hydrogen cyanide, HCN?
You did not answer the question.
Correct answer:
d)
Feedback:
![Page 21: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/21.jpg)
See pp. 12-18. Confirm the number of lone pairs on each atom.
Question 10
Which is a correct Lewis structure for nitric acid, HNO3?
You did not answer the question.
Correct answer:
c)
Feedback:
See pp. 12-18. The nitrogen atoms in structures (a) and (b) contain more
valence electrons than an octet. Also, confirm the number of lone pairs on each
atom.
Question 11
Which of the following does not have the ground-state configuration 1s22s22p6 ?
You did not answer the question.
Correct answer:
c) Cl-
Feedback:
This electronic configuration indicates a complete octet of the second shell. For
the electronic configurations of atoms and ions of elements, see pp. 4-7.
Question 12
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) Cl
Feedback:
For the electronegativity of elements, see p. 8. Elements at the upper right in
the periodic table have higher electronegativities.
Question 13
Which of the following elements is the most electropositive?
![Page 22: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/22.jpg)
You did not answer the question.
Correct answer:
a) B
Feedback:
For the electronegativity of elements, see p. 8. Elements at the lower left in the
periodic table have lower electronegativities (are more electropositive).
Question 14
Which of the following elements is the most electronegative?
You did not answer the question.
Correct answer:
c) F
Feedback:
For the electronegativity of elements, see p. 8. This question is about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 15
Which of the following elements is the most electropositive?
You did not answer the question.
Correct answer:
d) I
Feedback:
For the electronegativity of elements, see p. 8. This question is also about the
relative electronegativities of the halogens, i.e. elements in the same group.
Question 16
Which of the following compounds has an ionic bond?
You did not answer the question.
Correct answer:
b) NH4Cl
Feedback:
Compare the electronegativities of the main elements involved: see pp. 8-9 for
ionic bonds.
![Page 23: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/23.jpg)
Question 17
Which of the following molecules does not have a dipole moment?
You did not answer the question.
Correct answer:
d) CCl4
Feedback:
For dipole moments, see pp. 10-11. Dipole moments are determined not only by
the polarities of bonds but also by the symmetries of molecules.
Question 18
Which of the following contains an atom (other than hydrogen) which lacks an
octet of valence electrons?
You did not answer the question.
Correct answer:
c) BH3
Feedback:
Confirm the Lewis structure of each species.
Question 19
Which of the following is a correct Lewis structure of diazomethane, CH2N2?
You did not answer the question.
Correct answer:
d)
Feedback:
For drawing Lewis structures, see pp. 12-18. Confirm the number of lone pairs
on each atom.
Question 20
Which of the following Lewis structures of protonated methanamide is
incomplete?
You did not answer the question.
Correct answer:
![Page 24: Chem 200 Answer Key maganda](https://reader031.vdocument.in/reader031/viewer/2022031809/563db92c550346aa9a9abe26/html5/thumbnails/24.jpg)
b)
Feedback:
Complete correct Lewis structures should show all lone pairs.