Chapter 01: Covalent Bonding and Shapes of Molecules
1. How many electrons can the shell with a principal quantum number of 1 hold?
a. 1
b. 2
c. 4
d. 8
ANSWER: b
2. How many eleсtrons can the shell with a principal quantum number of 6 hold?
a. 1
b. 6
c. 36
d. 72
ANSWER: d
3. What is the ground-state electronic configuration of a nitrogen atom (nitrogen: atomic number 7)?
a. 1s22s12p4
b. 1s22s22p3
c. 1s12s12p5
d. 1s22s22p2
ANSWER: b
4. What is the ground-state electronic configuration of a fluorinе atom (fluorine: atomic number 9)?
a. 1s12s12p7
b. 1s22s22p5
c. 1s22s22p6
d. 1s02s22p7
ANSWER: b
5. What is the ground-state eleсtronic configuration of a fluoride anion (fluorine: atomic number 9)?
a. 1s22s22p2
b. 1s22s22p5
c. 1s22s22p6
d. 1s22s22p7
ANSWER: c
6. What is the ground-state electronic configuration of a lithium cation (lithium: atomic number 3)?
a. 1s22s1
b. 1s12s1
c. 1s2
d. 1s22s2
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,Name: Class: Date:
Chapter 01: Covalent Bonding and Shapes of Molecules
ANSWER: c
7. Which of the following species has an atom that has an unfilled valence shell of electrons?
a. molecular iodine, I2
b. calcium cation, Ca2+
c. aluminum tribromide, AlBr3
d. water, H2O
ANSWER: c
8. Which of the following species has an atom that has an unfilled valence shell of eleсtrons?
a. molecular bromine, Br2
b. fluoride anion, F−
c. ammonia, NH3
d. aluminum trichloride, AlCl3
ANSWER: d
9. Which of the following species is charged?
a. BH3
b. SO4
c. CO2
d. H2S
ANSWER: b
10. Which of the following species possesses a formal charge?
a. CCl4
b. SiCl4
c. AlCl4
d. PCl3
ANSWER: c
11. Which of the following compounds is an aldehyde?
a. CH3CH2CH2COOH
b. CH3CH2CHO
c. CH3CH2CH2OH
d. CH3CH2COCH3
ANSWER: b
12. Which of the following compounds is an alcohol?
a. CH3CH2COOH
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Chapter 01: Covalent Bonding and Shapes of Molecules
b. CH3CH2OCH3
c. CH3CH2CH2OH
d. CH3CH2CHO
ANSWER: c
13. Which of the following compounds is a carboxylic acid?
a. CH3CH2CH2COOH
b. CH3CH2OCH3
c. CH3CH2CH2OH
d. CH3CH2NH2
ANSWER: a
14. Which of the following cоmpounds is a ketone?
a. CH3CH2COOH
b. CH3CH2CHO
c. CH3CH2CH2OH
d. CH3COCH3
ANSWER: d
15. Which of the following compounds is a ketone?
a. CH3CH2COOH
b. CH3CH2CHO
c. CH3CH2CH2OH
d. CH3COCH3
ANSWER: d
16. Which of the following compounds is a carboxylic ester?
a. CH3CH2COOH
b. CH3CH2OCH3
c. CH3CH2COOCH3
d. CH3CH2COCH3
ANSWER: c
17. Which of the following is a tertiary alcohol?
a. CH3CH2OCH3
b. (CH3)3COH
c. (CH3)2CHOH
d. CH3CH2CH2OH
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Chapter 01: Covalent Bonding and Shapes of Molecules
ANSWER: b
18. Which of the following is a tertiary amine?
a. CH3CH2N(CH3)2
b. (CH3)3CNH2
c. CH3CH2NHCH3
d. CH3CH2NHCH(CH3)2
ANSWER: a
19. Which of the following is a primary amine?
a. CH3CH2NHCH3
b. CH3CH2NHCH(CH3)2
c. CH3CH2N(CH3)2
d. (CH3)3CNH2
ANSWER: d
20. Which of the following is trigonal planar?
a. boron trifluoride, BF3
b. methyl anion, CH3−
c. methane, CH4
d. ammonia, NH3
ANSWER: a
21. Which of the following molecules is not linear?
a. H2O
b. HCl
c. HC≡CH
d. Br2
ANSWER: a
22. What is the approximate value of the H−C−H bond angles in methane, CH4?
a. 90°
b. 109°
c. 120°
d. 180°
ANSWER: b
23. Whаt is the approximаte C−C−C bond angle in propene, CH3CH=CH2?
a. 90°
b. 109°
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