1. How many electrons can the shell with a principal quantum number of 1 hold?
a. 1
b. 2
c. 4
d. 8 ANS: B
2. How many electrons can the shell with a
... [Show More] principal quantum number of 2 hold?
a. 1
b. 2
c. 4
d. 8 ANS: 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 ANS: B
4. What is the ground-state electronic configuration of a fluorine atom (fluorine: atomic number 9)? a. 1s12s12p7
b. 1s22s22p5
c. 1s22s22p6
d. 1s02s22p7 ANS: B
5. What is the ground-state electronic configuration of a fluoride anion (fluorine: atomic number 9)? a. 1s22s22p2
b. 1s22s22p5
c. 1s22s22p6
d. 1s22s22p7 ANS: C
6. What is the ground-state electronic configuration of a sodium cation (sodium: atomic number 11)? a. 1s22s22p63s1
b. 1s22s22p53s1
c. 1s22s22p6
d. 1s22s22p63s2 ANS: C
7. Which of the following species has an atom that has an unfilled valence shell of electrons?
a. molecular hydrogen, H2
b. hydroxide anion, HO-
c. boron trifluoride, BF3
d. water, H2O ANS: C
8. Which of the following species has an atom that has an unfilled valence shell of electrons?
a. molecular bromine, Br2
b. fluoride anion, F-
c. ammonia, NH3
d. aluminum trichloride, AlCl3 ANS: D
9. Which of the following species possesses a formal charge?
a. BH3
b. BH4
c. CCl4
d. H2S ANS: B
10. Which of the following species possesses a formal charge?
a. CCl4
b. SiCl4
c. AlCl4
d. PCl3 ANS: C
11. Which of the following compounds is an aldehyde?
a. CH3CH2CH2COOH
b. CH3CH2CHO
c. CH3CH2CH2OH
d. CH3CH2COCH3 ANS: B
12. Which of the following compounds is an alcohol?
a. CH3CH2COOH
b. CH3CH2OCH3
c. CH3CH2CH2OH
d. CH3CH2CHO ANS: C
13. Which of the following compounds is a carboxylic acid?
a. CH3CH2COOH
b. CH3CH2OCH3
c. CH3CH2CH2OH
d. CH3CH2CHO ANS: A
14. Which of the following compounds is a ketone?
a. CH3CH2COOH
b. CH3CH2CHO
c. CH3CH2CH2OH
d. CH3COCH3 ANS: D
15. Which of the following compounds is a ketone?
a. CH3CH2COOH
b. CH3CH2CHO
c. CH3CH2CH2OH
d. CH3COCH3 ANS: D
16. Which of the following compounds is a carboxylic ester?
a. CH3CH2COOH
b. CH3CH2OCH3
c. CH3CH2COOCH3
d. CH3CH2COCH3 ANS: C
17. Which of the following is a tertiary alcohol?
a. CH3CH2OCH3
b. (CH3)3COH
c. (CH3)2CHOH
d. CH3CH2CH2OH ANS: B
18. Which of the following is a tertiary amine?
a. CH3CH2N(CH3)2
b. (CH3)3CNH2
c. CH3CH2NHCH3
d. CH3CH2NHCH(CH3)2 ANS: A
19. Which of the following is a primary amine?
a. CH3CH2NHCH3
b. CH3CH2NHCH(CH3)2
c. CH3CH2N(CH3)2
d. (CH3)3CNH2 ANS: D
20. Which of the following is trigonal planar?
a. boron trifluoride, BF3
b. methyl anion, CH3-
c. methane, CH4
d. ammonia, NH3
ANS: A
21. Which of the following molecules is not linear?
a. H2O
b. CO2
c. HCCH
d. Cl2 ANS: 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 ANS: B
23. What is the approximate C-C-C bond angle in propene, CH3CH=CH2?
a. 90
b. 109
c. 120
d. 180 ANS: C
24. What is the approximate C-C-C bond angle in propyne, HCCCH3?
a. 90
b. 109
c. 120
d. 180 ANS: D
25. What is the approximate H-C-O bond angle in formaldehyde, H2C=O?
a. 90
b. 109
c. 120
d. 180 ANS: C
26. Which of the following elements has the highest electronegativity?
a. N
b. C
c. O
d. S ANS: C
27. Which of the following elements has the highest electronegativity?
a. C
b. P
c. Si
d. Cl ANS: D [Show Less]