Chemistry in Context
Chemistry in Context
8th Edition
ISBN: 9780073522975
Author: American Chemical Society
Publisher: McGraw-Hill Education
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Chapter 5, Problem 17Q

(a)

Interpretation Introduction

Interpretation:

The ionic compound name and the chemical formula that can be formed from Na and Cl has to be given.

Concept Introduction:

Ionic compound is formed from a metal and a non-metal.  Metal forms a cation while non-metal forms an anion.  Ionic compound is composed of ions present in fixed proportions.  They gave a regular geometric structure and are arranged in regular manner.

Ionic compounds are named in a way that the cation name is given first followed by the anion name with a space between cation name and anion name.  For the anion name, suffix “-ide” will be added.

(a)

Expert Solution
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Explanation of Solution

Given elements are Na and Br.  In this sodium is a metal and bromine is a nonmetal.  Therefore, sodium forms the cation part while bromine forms that anion part.  Sodium belongs to Group IA and it has one valence electron.  Bromine belongs to Group VIIA and it has seven valence electrons.  Sodium loses the one valence electron and bromine gains one electron to attain octet configuration.  Hence, sodium and bromine can form ionic compound in 1:1 ratio.  Hence, the chemical formula of ionic compound is NaCl.

Name of NaCl can be given by cation name followed by the anion name.  Therefore, the name of NaCl can be given as sodium chloride.

Conclusion

Chemical formula and name of ionic compound that is formed from Na and Br is given.

(b)

Interpretation Introduction

Interpretation:

The ionic compound name and the chemical formula that can be formed from Cd and S has to be given.

Concept Introduction:

Ionic compound is formed from a metal and a non-metal.  Metal forms a cation while non-metal forms an anion.  Ionic compound is composed of ions present in fixed proportions.  They gave a regular geometric structure and are arranged in regular manner.

Ionic compounds are named in a way that the cation name is given first followed by the anion name with a space between cation name and anion name.  For the anion name, suffix “-ide” will be added.

(b)

Expert Solution
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Explanation of Solution

Given elements are Cd and S.  In this cadmium is a metal and sulfur is a nonmetal.  Therefore, cadmium forms the cation part while sulfur forms that anion part.  Cadmium belongs to Group IIA and it has two valence electrons.  Sulfur belongs to Group VIA and it has six valence electrons.  Cadmium loses two valence electrons and sulfur gains two electrons to attain octet configuration.  Hence, cadmium and sulfur can form ionic compound in 1:1 ratio.  Hence, the chemical formula of ionic compound is CdS.

Name of CdS can be given by cation name followed by the anion name.  Therefore, the name of CdS can be given as cadmium sulfide.

Conclusion

Chemical formula and name of ionic compound that is formed from Cd and S is given.

(c)

Interpretation Introduction

Interpretation:

The ionic compound name and the chemical formula that can be formed from Ba and Cl has to be given.

Concept Introduction:

Ionic compound is formed from a metal and a non-metal.  Metal forms a cation while non-metal forms an anion.  Ionic compound is composed of ions present in fixed proportions.  They gave a regular geometric structure and are arranged in regular manner.

Ionic compounds are named in a way that the cation name is given first followed by the anion name with a space between cation name and anion name.  For the anion name, suffix “-ide” will be added.

(c)

Expert Solution
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Explanation of Solution

Given elements are Ba and Cl.  In this barium is a metal and chlorine is a nonmetal.  Therefore, barium forms the cation part while chlorine forms that anion part.  Barium belongs to Group IIA and it has two valence electrons.  Chlorine belongs to Group VIIA and it has seven valence electrons.  Barium loses two valence electrons and chlorine gains one electron to attain octet configuration.  Hence, barium and chlorine can form ionic compound in 1:2 ratio.  Hence, the chemical formula of ionic compound is BaCl2.

Name of BaCl2 can be given by cation name followed by the anion name.  Therefore, the name of BaCl2 can be given as barium chloride.

Conclusion

Chemical formula and name of ionic compound that is formed from Ba and Cl is given.

(d)

Interpretation Introduction

Interpretation:

The ionic compound name and the chemical formula that can be formed from Al and O has to be given.

Concept Introduction:

Ionic compound is formed from a metal and a non-metal.  Metal forms a cation while non-metal forms an anion.  Ionic compound is composed of ions present in fixed proportions.  They gave a regular geometric structure and are arranged in regular manner.

Ionic compounds are named in a way that the cation name is given first followed by the anion name with a space between cation name and anion name.  For the anion name, suffix “-ide” will be added.

(d)

Expert Solution
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Explanation of Solution

Given elements are Al and O.  In this aluminium is a metal and oxygen is a nonmetal.  Therefore, aluminium forms the cation part while oxygen forms that anion part.  Aluminium belongs to Group IIIA and it has three valence electrons.  Oxygen belongs to Group VIA and it has six valence electrons.  Aluminium loses three valence electrons and oxygen gains two electrons to attain octet configuration.  Hence, aluminium and oxygen can form ionic compound in 2:3 ratio.  Hence, the chemical formula of ionic compound is Al2O3.

Name of Al2O3 can be given by cation name followed by the anion name.  Therefore, the name of Al2O3 can be given as aluminium oxide.

Conclusion

Chemical formula and name of ionic compound that is formed from Al and O is given.

(e)

Interpretation Introduction

Interpretation:

The ionic compound name and the chemical formula that can be formed from Rb and I has to be given.

Concept Introduction:

Ionic compound is formed from a metal and a non-metal.  Metal forms a cation while non-metal forms an anion.  Ionic compound is composed of ions present in fixed proportions.  They gave a regular geometric structure and are arranged in regular manner.

Ionic compounds are named in a way that the cation name is given first followed by the anion name with a space between cation name and anion name.  For the anion name, suffix “-ide” will be added.

(e)

Expert Solution
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Explanation of Solution

Given elements are Rb and I.  In this rubidium is a metal and iodine is a nonmetal.  Therefore, rubidium forms the cation part while iodine forms that anion part.  Rubidium belongs to Group IA and it has one valence electron.  Iodine belongs to Group VIIA and it has seven valence electrons.  Rubidium loses the one valence electron and iodine gains one electron to attain octet configuration.  Hence, rubidium and iodine can form ionic compound in 1:1 ratio.  Hence, the chemical formula of ionic compound is RbI.

Name of RbI can be given by cation name followed by the anion name.  Therefore, the name of RbI can be given as rubidium iodide.

Conclusion

Chemical formula and name of ionic compound that is formed from Rb and I is given.

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Chapter 5 Solutions

Chemistry in Context

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