JAMB - Chemistry (2000 - No. 12)
The knowledge of half-life can be used to
create an element
detect an element
split an element
irradiate an element
Paaiškinimas
The half-life of a species is the time it takes for the concentration of that substance to fall to half of its initial value.
Since every elements have their specific half life which is neither affected by temperature nor pressure, the knowledge of half life can be used to detect the particular element.