(a)
Interpretation : The A-group number to which element X belong is to be identified.
Concept Introduction : Cations and anions combine to form an ionic compound.
The cation of metal and anion of non-metal are the main components of ionic compounds.
(a)
Answer to Problem 79A
Element X belongs to the 6A group number.
Explanation of Solution
Even though ionic compounds are formed of ions, they have no electrical charge.
The smallest whole-number ratio of ions in an ionic compound is known as a formula unit.
The given formula is
Since calcium is a metal belonging to the 2A group it will lose 2 electrons to form an octet configuration.
The formed cation from calcium is
The anion should be
So, the group number will be 6A group.
(b)
Interpretation : The A-group number to which element X belong is to be identified.
Concept Introduction : Cations and anions combine to form an ionic compound.
The cation of metal and anion of non-metal are the main components of ionic compounds.
(b)
Answer to Problem 79A
Element X belongs to the 7A group number.
Explanation of Solution
Even though ionic compounds are formed of ions, they have no electrical charge. The smallest whole-number ratio of ions in an ionic compound is known as a formula unit.
The given formula is
Since magnesium is a metal belonging to the 2A group it will lose 2 electrons to form an octet configuration.
The formed cation from calcium is
The anion should be
So, the group number will be 7A group.
(c)
Interpretation : The A-group number to which element X belong is to be identified.
Concept Introduction : Cations and anions combine to form an ionic compound.
The cation of metal and anion of non-metal are the main components of ionic compounds.
(c)
Answer to Problem 79A
The element X belongs to 1A group number.
Explanation of Solution
Even though ionic compounds are formed of ions, they have no electrical charge. The smallest whole-number ratio of ions in an ionic compound is known as a formula unit.
The given formula is
Since nitrogen is a non-metal belonging to the 5A group it will gain 3 electrons to form an octet configuration.
The formed anion from nitrogen is
The cation should be
So, the group number will be 1A group.
(d)
Interpretation : The A-group number to which element X belong is to be identified.
Concept Introduction : Cations and anions combine to form an ionic compound.
The cation of metal and anion of non-metal are the main components of ionic compounds.
(d)
Answer to Problem 79A
Element X belongs to 6A group number.
Explanation of Solution
Even though ionic compounds are formed of ions, they have no electrical charge.
The smallest whole-number ratio of ions in an ionic compound is known as a formula unit.
The given formula is
Since aluminum is a metal belonging to the 3A group each of it will lose 3 electrons to form an octet configuration.
The formed cation from aluminium is
The anion should be
So, the group number will be 6A group.
(e)
Interpretation : The A-group number to which element X belong is to be identified.
Concept Introduction : Cations and anions combine to form an ionic compound.
The cation of metal and anion of non-metal are the main components of ionic compounds.
(e)
Answer to Problem 79A
The element X belongs to 1A group number.
Explanation of Solution
Even though ionic compounds are formed of ions, they have no electrical charge. The smallest whole-number ratio of ions in an ionic compound is known as a formula unit.
The given formula is
Since fluorine is a non-metal belonging to the 7A group it will gain 1 electron to form an octet configuration.
The formed anion from fluorine is
The cation should be
So, the group number will be 1A group.
(f)
Interpretation : The A-group number to which element X belong is to be identified.
Concept Introduction : Cations and anions combine to form an ionic compound.
The cation of metal and anion of non-metal are the main components of ionic compounds.
(f)
Answer to Problem 79A
The element X belongs to 2A group number.
Explanation of Solution
Even though ionic compounds are formed of ions, they have no electrical charge. The smallest whole-number ratio of ions in an ionic compound is known as a formula unit.
The given formula is
Since sulphide is a non-metal belonging to the 6A group it will gain 2 electrons to form an octet configuration.
The formed anion from sulphide is
The cation should be
So, the group number will be 2A group.
Chapter 7 Solutions
Chemistry 2012 Student Edition (hard Cover) Grade 11
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