
Concept explainers
(a)
Interpretation:
Concept Introduction:
Alpha particle
General equation for alpha decay is as follows:
Here,
Beta emission
The generic equation of the beta decay is as follows:
Here,
Gamma rays
(a)

Explanation of Solution
Skeleton equation for transition is as follows:
Since this transition is nuclear fission between
Sum of mass number on left side is 31 and on right side is 30. Thus missed particle must have 1 mass number.
Sum of atomic number on left side is 15 and on right side is 15. Thus missed particle must have 1 atomic number.
Atomic particle with 1 mass number and zero atomic number is
Hence resultant nuclear equation can be completed as follows:
(b)
Interpretation:
Nuclear equation below has to be completed.
Concept Introduction:
Refer to part (a).
(b)

Explanation of Solution
Skeleton equation for transition is as follows:
Since this transition is positron emission thus it causes atomic number to decrease by 1. According to periodic table, element with atomic number 13 is aluminum
(c)
Interpretation:
Nuclear equation below has to be completed.
Concept Introduction:
Refer to part (a).
(c)

Explanation of Solution
Skeleton equation for transition is as follows:
In nuclear fission reactions sum of atomic number must be equal to sum of atomic number on right side. Also, sum of mass number on left side must be equal to sum of mass number on right side.
Sum of mass number on left side is 2 and on right side is 14. Thus missed particle must have 12 mass number.
Sum of atomic number on left side is 1 and on right side is 7. Thus missed particle must have 6 atomic number.
According to periodic table, element with atomic number 6 is carbon.
Hence resultant nuclear equation can be completed as follows:
(d)
Interpretation:
Nuclear equation below has to be completed.
Concept Introduction:
Refer to part (a).
(d)

Explanation of Solution
Skeleton equation for transition is as follows:
Since this transition is beta emission thus it causes atomic number to increase by 1. According to periodic table, element with atomic number 35 is bromine
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Chapter 18 Solutions
FOUND.OF COLLEGE CHEMISTRY
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