(a)
Interpretation:
The given table of isotope should be completed.
Concept Introduction:
Isotopes are the compounds having the same
To write an isotope symbol atomic number(Z) is written on the lower left side and atomic mass(A) is written on the upper left side of an element.

Answer to Problem 10.27P
The complete table for isotopes symbol is represented as follows:
Explanation of Solution
Atomic number is equal to the number of protons in an element.
Mass number = Number of protons + Number of neutrons
The atomic number for chromium is 24 and mass number is 51.
Since atomic number = number of protons
Thus, the number of protons in chromium is 24 and the number of neutrons in chromium can be calculated by simply subtracting number of protons from mass number as follows:
Therefore, the isotope symbol for Chromium is
(b)
Interpretation:
The given table of isotopes should be completed.
Concept Introduction:
Isotopes are the compounds having the same atomic number but different atomic mass.
To write an isotope symbol atomic number(Z) is written on the lower left side and atomic mass(A) is written on the upper left side of an element.

Answer to Problem 10.27P
The complete table for isotopes symbol is represented as follows:
Atomic number(Z) | Mass number(A) | Number of protons | Number of neutrons | Isotope symbol | |
Palladium-103 | 46 | 103 | 46 | 57 |
Explanation of Solution
Atomic number is equal to the number of protons in an element.
Mass number = Number of protons + Number of neutrons.
The atomic number for the element listed in b option is given which is equal to 46 and the mass number is 103. So, the element is Palladium (Pd).
Since atomic number = number of protons.
Thus, the number of protons in palladium is 46 and the number of neutrons in palladium can be calculated by simply subtracting number of protons from the mass number as follows:
Therefore, the isotope symbol for Palladium is
(c)
Interpretation:
The given table of isotopes should be completed.
Concept Introduction:
Isotopes are the compounds having the same atomic number but different atomic mass.
To write an isotope symbol atomic number(Z) is written on the lower left side and atomic mass(A) is written on the upper left side of an element.

Answer to Problem 10.27P
The complete table for isotopes symbol is represented as follows:
Atomic number(Z) | Mass number(A) | Number of protons | Number of neutrons | Isotope symbol | |
Potassium-19 | 19 | 42 | 19 | 23 |
Explanation of Solution
Atomic number is equal to the number of protons in an element.
Mass number = Number of protons + Number of neutrons
The number of protons in element listed in option c is 19 and the number of neutrons is 23.
Since atomic number = number of protons
Thus, the atomic number of this element is 19 and the element will be Potassium (K) and the mass number will be calculated as follows:
Therefore, the isotope symbol for Palladium is
(d)
Interpretation:
The given table of isotopes should be completed.
Concept Introduction:
Isotopes are the compounds having the same atomic number but different atomic mass.
To write an isotope symbol atomic number(Z) is written on the lower left side and atomic mass(A) is written on the upper left side of an element.

Answer to Problem 10.27P
The complete table for isotopes symbol is represented as follows:
Atomic number(Z) | Mass number(A) | Number of protons | Number of neutrons | Isotope symbol | |
Xenon-133 | 54 | 133 | 54 | 79 |
Explanation of Solution
Atomic number is equal to the number of protons in an element.
Mass number = Number of protons + Number of neutrons
The number of protons for element listed in d option are 54 and mass number is 133.
Since atomic number = number of protons
Thus, atomic number for this element will be 54 and the element is Xenon (Xe) and the number of neutrons in xenon can be calculated by simply subtracting number of protons from mass number as follows:
Therefore, the isotope symbol for Xenon is
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