What particle or nucleus X is needed to complete the following equation? 210
86 Rn ? 206
84 Po + X

Question

Quizplus · Accepted Answer

The equation represents alpha decay, where an alpha particle (which is equivalent to a helium nucleus, consisting of 2 protons and 2 neutrons) is emitted. This results in the atomic number decreasing by 2 (from 86 to 84) and the mass number decreasing by 4 (from 210 to 206), which matches the characteristics of an alpha particle.

What Particle or Nucleus X Is Needed to Complete the Following