Answer:
The Virtualium half-life is 12 years.
Step-by-step explanation:
Half-life, also known as semi-disintegration period, is the time required for half the number of atoms of the radioactive isotope present in a sample to disintegrate.
Disintegration is not related to the extinction of the atom, that is, the atom does not cease to exist. In fact, what happens is the natural decay that the atom undergoes. In decay, the atom (X), when emitting alpha and beta radiation, automatically changes into a new chemical element (Y), which occurs incessantly until the atom is no longer radioactive (stable atom).