Indicate the symbol, the mass number, and the atomic number of the missing product i each of the following nuclear reactions.

1. (a) 7 13 N → 6 13 C   +   ?
2. (b) 20 41 Ca +   − 1 0 e   →   ? ?
3. (c) 38 90 Sr → 39 90 Y   +   ?
4. (d) 11 22 Na → ?   +   1 0 β

Interpretation:

The symbol, mass number and the atomic number in nuclear reactions has to be identified.

Concept Introduction: A nuclear reaction is semantically considered to be process in which two nuclei, or else a nucleus of an atom and a subatomic particle. Hence nuclear reaction must cause a transformation of at least one nuclide to another. If a nucleus interacts with another nucleus or particle and they separate without changing the nature of any nuclide.

This missing particle has a mass of Zero and a charge of 1+, these are the characteristics of a positron, +β+10. If this particle is included in the equation, the sums of the atomic numbers (7 = 6+1) and the mass numbers (13) on both sides of the equation are equal

Interpretation:

The symbol, mass number and the atomic number in nuclear reactions has to be identified.

Concept Introduction: A nuclear reaction is semantically considered to be process in which two nuclei, or else a nucleus of an atom and a subatomic particle. Hence nuclear reaction must cause a transformation of at least one nuclide to another. If a nucleus interacts with another nucleus or particle and they separate without changing the nature of any nuclide.

Interpretation:

The symbol, mass number and the atomic number in nuclear reactions has to be identified.

Concept Introduction: A nuclear reaction is semantically considered to be process in which two nuclei, or else a nucleus of an atom and a subatomic particle. Hence nuclear reaction must cause a transformation of at least one nuclide to another. If a nucleus interacts with another nucleus or particle and they separate without changing the nature of any nuclide.

Interpretation:

The symbol, mass number and the atomic number in nuclear reactions has to be identified.

Concept Introduction: A nuclear reaction is semantically considered to be process in which two nuclei, or else a nucleus of an atom and a subatomic particle. Hence nuclear reaction must cause a transformation of at least one nuclide to another. If a nucleus interacts with another nucleus or particle and they separate without changing the nature of any nuclide.