Concept explainers
To determine: The diagram of the new nucleus when the given isotope emits a positron
Answer to Problem 5.51UTC
Solution:
The new nucleus when the given isotopes emit a positron is as follows:
Explanation of Solution
Isotopes:
The atoms of an element with different mass number or
Therefore it in not necessary that all atoms of a given element contain the same number of neutrons in their nuclei . For example hydrogen has three isotopes
Positron particle (
To balance the nuclear reaction as follows:
- The sum of the subscript means the
atomic numbers must be equal on the both side of the equation. - The sum of the superscript means the mass numbers must be equal on the both side of the equation.
Calculation:
When an atom of X-11 emits a positron then Y-11 is formed. The balanced nuclear reaction is as follows:
Therefore; the new nucleus when the given isotopes emit a positron; has same in mass number and 1 unit’s decreases in atomic number as follows:
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