Answer:
²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He + Energy
Explanation:
Hello,
When uranium undergoes an alpha decay, it's atomic number is reduced by 2 while it atomic mass is reduced by 4 similar to the elements helium (He) and sometimes alpha decay is represented by a helium atom.
Equation of decay
²³⁸₉₂U → ²³⁴₉₀Th + ⁴₂He + Energy
When uranium undergoes an alpha decay, it loses an alpha particle similar to a helium atom and forms thorium which has an atomic number of 90 and atomic mass of 234 with the release of energy.
