How to use in-sentence of “half life”:
– Except for Plutonium, their half life is in the order of several minutes, to seconds.
– The longest-lived isotope of promethium has a half life of 17.7 years.
– It has a half life of 2.2 x 10 years.
– Others do not like Tennessine-294 which has a half life of 51 milliseconds.
– They have a half life of between 1.6 milliseconds and 26 seconds.

