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PARALLEL EXERCISES

The exercises in groups A and B cover the same concepts. Solutions to group A exercises are located in appendix E.

Group A Group B
1. Use electron dot symbols in equations to predict the formula of 1. Use electron dot symbols in equations to predict the formulas of
the ionic compound formed from the following: the ionic compounds formed between the following:
(a) K and I (a) Li and F
(b) Sr and S (b) Be and S
(c) Na and O (c) Li and O
(d) Al and O (d) Al and S
2. Name the following ionic compounds formed from variable- 2. Name the following ionic compounds formed from variable-
charge transition elements: charge transition elements:
(a) CuS (a) PbCl 2
(b) Fe 2 O 3 (b) FeO
(c) CrO (c) Cr 2 O 3
(d) PbS (d) PbO
3. Name the following polyatomic ions: 3. Name the following polyatomic ions:
– –
(a) (OH) (a) (C 2 H 3 O 2 )
2– –
(b) (SO 3 ) (b) (HCO 3 )
– 2–
(c) (ClO) (c) (SO 4 )
– –
(d) (NO 3 ) (d) (NO 2 )
2– –
(e) (CO 3 ) (e) (MnO 4 )
– 2–
(f) (ClO 4 ) (f) (CO 3 )
4. Use the crossover technique to write formulas for the following 4. Use the crossover technique to write formulas for the following
compounds: compounds:
(a) Iron(III) hydroxide (a) Aluminum hydroxide
(b) Lead(II) phosphate (b) Sodium phosphate
(c) Zinc carbonate (c) Copper(II) chloride
(d) Ammonium nitrate (d) Ammonium sulfate
(e) Potassium hydrogen carbonate (e) Sodium hydrogen carbonate
(f) Potassium sulfite (f) Cobalt(II) chloride
5. Write formulas for the following covalent compounds: 5. Write formulas for the following covalent compounds:
(a) Carbon tetrachloride (a) Silicon dioxide
(b) Dihydrogen monoxide (b) Dihydrogen sulfide
(c) Manganese dioxide (c) Boron trifluoride
(d) Sulfur trioxide (d) Dihydrogen dioxide
(e) Dinitrogen pentoxide (e) Carbon tetrafluoride
(f) Diarsenic pentasulfide (f) Nitrogen trihydride
6. Name the following covalent compounds: 6. Name the following covalent compounds:
(a) CO (a) N 2 O
(b) CO 2 (b) SO 2
(c) CS 2 (c) SiC
(d) N 2 O (d) PF 5
(e) P 4 S 3 (e) SeCl 6
(f) N 2 O 3 (f) N 2 O 4
7. Predict if the bonds formed between the following pairs of 7. Predict if the bonds formed between the following pairs of
elements will be ionic, polar covalent, or covalent: elements will be ionic, polar covalent, or covalent:
(a) Si and O (a) Si and C
(b) O and O (b) Cl and Cl
(c) H and Te (c) S and O
(d) C and H (d) Sr and F
(e) Li and F (e) O and H
(f) Ba and S (f) K and F

250 CHAPTER 9 Chemical Bonds 9-22