Question

The particle \( x \) in the following nuclear reaction is:
\[ ^9_4Be + ^4_2He \rightarrow ^{12}_6C + x \]

• A. electron
• B. proton
• C. neutron
• D. photon

Hint:

Nuclear reactions must conserve both mass and charge.

Answer 1

The Correct Option is C

Balancing the mass number and atomic number,
\[ 9 + 4 = 12 + A_x \quad \text{and} \quad 4 + 2 = 6 + Z_x \] Solving,
\[ A_x = 1, \quad Z_x = 0 \] which corresponds to a neutron.