Question

A nuclear reaction is given by \( {}_{Z}X^{A} \rightarrow {}_{Z+1}Y^{A} + {}_{-1}e^{0} + \bar{\nu} \). This reaction represents:

• A. fission
• B. $\beta$-decay
• C. $\sigma$-decay
• D. fusion

Hint:

In $\beta^{-}$ decay, a neutron is converted into a proton, an electron, and an antineutrino.

Answer 1

The Correct Option is B

Step 1: Concept
$\beta$-decay involves the emission of an electron (or positron) from the nucleus.
Step 2: Analysis
In the given reaction, the atomic number increases by 1 ($Z \rightarrow Z+1$) while the mass number $A$ remains constant, accompanied by an electron ($_{-1}e^{0}$) and an antineutrino ($\bar{\nu}$).
Step 3: Conclusion
This is the characteristic equation for negative beta ($\beta^{-}$) decay.
Final Answer: (B)