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Parallel Exercises B
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1

Use electron dot symbols in equations to predict the formulas of the ionic compounds formed between the following:
(a) Li and F
(b) Be and S
(c) Li and O
(d) Al and S
2

Name the following ionic compounds formed from variablecharge transition elements:
(a) PbCl2
(b) FeO
(c) Cr2O3
(d) PbO
3

Name the following polyatomic ions:
(a) (C2H3O2)−
(b) (HCO3)−
(c) (SO4)2−
(d) (NO2)−
(e) (MnO4)−
(f) (CO3)2−
4

Use the crossover technique to write formulas for the following compounds:
(a) Aluminum hydroxide
(b) Sodium phosphate
(c) Copper(II) chloride
(d) Ammonium sulfate
(e) Sodium hydrogen carbonate
(f) Cobalt(II) chloride
5

Write formulas for the following covalent compounds:
(a) Silicon dioxide
(b) Dihydrogen sulfide
(c) Boron trifluoride
(d) Dihydrogen dioxide
(e) Carbon tetrafluoride
(f) Nitrogen trihydride
6

Name the following covalent compounds:
(a) N2O
(b) SO2
(c) SiC
(d) PF5
(e) SeCl6
(f) N2O4
7

Predict if the bonds formed between the following pairs of elements will be ionic, polar covalent, or covalent:
(a) Si and C
(b) Cl and Cl
(c) S and O
(d) Sr and F
(e) O and H
(f) K and F





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