
Interpretation:
The unknown atom, X, is to be identified in the given nuclear reactions.
Concept Introduction:
In a balanced radioactive decay:
And
In a balanced radioactive decay, the subscript on the individual particles represents the

Answer to Problem 6QP
Solution:
(a)The balanced nuclear reaction is
The balanced nuclear reaction is
The balanced nuclear reaction is
The balanced nuclear reaction is
Explanation of Solution
a)
Now, apply the balancing rules as follows:
And
On the left side of the reaction, the sum of the atomic numbers is
On the right side of the reaction, the sum of the atomic numbers is
Thus, the atomic number of X is calculated as follows:
Similarly,
On the left side of the reaction, the sum of the mass number is
On the right side of the reaction, the sum of the mass numbers is
Thus, the mass number of X is calculated as follows:
So, X will be
The balanced nuclear reaction is as follows:
b)
Now, apply the balancing rules as follows:
And
On the left side of the reaction, the sum of the atomic numbers is
On the right side of the reaction, the sum of the atomic numbers is
Thus, the atomic number of X is as follows:
Similarly,
On the left side of the reaction, the sum of the mass numbers is
On the right side of the reaction, the sum of the mass numbers is
Thus, the mass number of X is calculated as follows:
So, X will be
The balanced nuclear reaction is as follows:
c)
Now, apply the balancing rules as follows:
And
On the left side of the reaction, the sum of the atomic numbers is as follows:
On the right side of the reaction, the sum of the atomic numbers is
Thus, the atomic number of X is calculated as follows:
Similarly,
On the left side of the reaction, the sum of the mass numbers is as follows:
On the right side of the reaction, the sum of the mass numbers is
Thus, the mass number of X is as follows:
So, X will be
The balanced nuclear reaction is as follows:
d)
Now, apply the balancing rules as follows:
And
On the left side of the reaction, the sum of the atomic numbers is as follows:
On the right side of the reaction, the sum of the atomic numbers is
Thus, the atomic number of X is calculated as follows:
Similarly,
On the left side of the reaction, the sum of the mass numbers is as follows:
On the right side of the reaction, the sum of the mass numbers is
Thus, the mass number of X is as follows:
So, X will be
Thus, the balanced nuclear reaction is as follows:
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Chapter 20 Solutions
EBK CHEMISTRY
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