
Concept explainers
(a)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the
(a)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it is a neutral species, therefore, number of electron is also equal to
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(b)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(b)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it has a charge of
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(c)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(c)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it has a charge of
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(d)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(d)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it has a charge of
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(e)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(e)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it is a neutral species, therefore, number of electron is also equal to
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(f)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(f)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it is a neutral species, therefore, number of electron is also equal to
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(g)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(g)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it has a charge of
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(h)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(h)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it is a neutral species, therefore, number of electron is also equal to
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
(i)
Interpretation: The numbers of protons, neutrons and electrons present in
Concept introduction: In a neutral atom, the number of electrons present are equal to protons. These two are also equivalent to the atomic number in case of neutral atoms. The number of neutrons is calculated by taking the difference in mass number and atomic number. This is because mass number is calculated by taking sum of number of protons and number of neutrons.
(i)

Answer to Problem 43E
The numbers of protons, neutrons and electrons present in
Explanation of Solution
The element given is
In this notation of elements, the subscript represents the atomic number and superscript represents the mass number.
So, the atomic number of
Since it has a charge of
The formula used for the calculation of number of neutrons is shown below.
Substitute the value of mass number and atomic number of
Therefore, the number of neutrons in
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Chapter 2 Solutions
EBK CHEMICAL PRINCIPLES
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