How do you get a Radon daughter?

Question

How do you get a Radon daughter?

Answer 1

Daughter elements or radon cling to airborne dust particles forming a health hazard when the particles are inhaled.

The kind of damage a radon daughter inflicts depends on its half-life. Shirt-lived radon daughters break down rapidly - and so soon after being inhaled - that the alpha particles they give off are absorbed by the lining of the lungs.

Answer 2

It is radioactive

so when it undergoes fission, it will split to form two "daughter" nuclei, energy and 2 or 3 additional neutrons

:)