Concept explainers
(a)
The number of protons, neutrons and electrons in an isotope
(a)
Answer to Problem 12PEB
Solution:
The number of protons, neutrons and electrons in an isotope
Explanation of Solution
Given data:
The symbol of an isotope is
Formula used:
The formula for mass number is as follows;
Here A is the mass number, N is the neutron number and Z is the proton number.
Explanation:
For an element say X the representation of mass number A and
Compare the standard
Use the formula of mass number and rearrange it for the number of neutrons.
Substitute
Since, the number of electrons is exactly equal to the number of protons for every atom. Hence, number of protons = 6, neutrons = 6 and electrons = 6.
Conclusion:
The number of protons, neutrons and electrons in an isotope
(b)
The number of protons, neutrons and electrons in an isotope
(b)
Answer to Problem 12PEB
Solution:
The number of protons, neutrons and electrons in an isotope
Explanation of Solution
Given data:
The isotope
Formula used:
The formula for mass number is as follows;
Here A is the mass number, N is the neutron number and Z is the proton number.
Explanation:
For an element say X the representation of mass number A and atomic mass Z is,
Compare the standard representation of an element with the symbol of the given isotope that is
Use the formula of mass number and rearrange it for the number of neutrons.
Substitute
Since, the number of electrons are exactly equal to the number of protons for every atom. Hence, number of protons = 1, neutrons = 0 and electrons = 1.
Conclusion:
Hence, the number of protons, neutrons and electrons in an isotope
(c)
The number of protons, neutrons and electrons in an isotope of
(c)
Answer to Problem 12PEB
Solution:
The number of protons, neutrons and electrons in an isotope
Explanation of Solution
Given data:
The isotope
Formula used:
The formula for mass number is as follows;
Here A is the mass number, N is the neutron number and Z is the proton number.
Explanation:
For an element say X the representation of mass number A and atomic mass Z is
Compare the standard representation of an element with the symbol of the given isotope that is
Use the formula of mass number and rearrange it for the number of neutrons.
Substitute
Since, the number of electrons are exactly equal to the number of protons for every atom. Hence, number of protons = 18, neutrons = 22, and electrons = 18.
Conclusion:
Hence, the number of protons, neutrons and electrons in an isotope
18, 22, and 18 respectively.
(d)
The number of protons, neutrons and electrons in an isotope
(d)
Answer to Problem 12PEB
Solution:
The number of protons, neutrons and electrons in an isotope
Explanation of Solution
Given data:
The isotope
Formula used:
The formula for mass number is as follows;
Here A is the mass number, N is the neutron number and Z is the proton number.
Explanation:
For an element say X the representation of mass number A and atomic mass Z is
Compare the standard representation of an element with the symbol of the given isotope that is
Use the formula of mass number and rearrange it for the number of neutrons.
Substitute
Since, the number of electrons is exactly equal to the number of protons for every atom. Hence, number of protons = 1, neutrons = 1, electrons = 1
Conclusion:
Hence, the number of protons, neutrons and electrons in an isotope
(e)
The number of protons, neutrons and electrons in an isotope
(e)
Answer to Problem 12PEB
Solution:
The number of protons, neutrons and electrons in an isotope
Explanation of Solution
Given data:
The isotope
Formula used:
The formula for mass number is as follows;
Here A is the mass number, N is the neutron number and Z is the proton number.
Explanation:
For an element say X the representation of mass number A and atomic mass Z is
Compare the standard representation of an element with the symbol of the given isotope that is
Use the formula of mass number and rearrange it for the number of neutrons.
Substitute
Since, the number of electrons is exactly equal to the number of protons for every atom. Hence, number of protons = 79, neutrons = 118 and electrons = 79.
Conclusion:
Hence, the number of protons, neutrons and electrons in an isotope
(f)
The number of protons, neutrons and electrons in an isotope
(f)
Answer to Problem 12PEB
Solution:
The number of protons, neutrons and electrons in an isotope
Explanation of Solution
Given data:
The isotope
Formula used:
The formula for mass number is as follows;
Here A is the mass number, N is the neutron number and Z is the proton number.
Explanation:
For an element say X the representation of mass number A and atomic mass Z is
Compare the standard representation of an element with the symbol of the given isotope that is
Use the formula of mass number and rearrange it for the number of neutrons.
Substitute
Since, the number of electrons is exactly equal to the number of protons for every atom. Hence, number of protons = 92, neutrons = 143 and electrons = 92.
Conclusion:
Hence, the number of protons, neutrons and electrons in an isotope
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Chapter 8 Solutions
Physical Science
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