A hospital buys a compound that contains an isotope of barium. Several months later, most of the barium has changed to the element lanthanum. Which of the following is responsible for this change?

Question

Quizplus · Accepted Answer

The transformation of barium into lanthanum over time is due to radioactive decay, a process where an unstable atomic nucleus loses energy by emitting radiation, leading to the change of one element into another.

A Hospital Buys a Compound That Contains an Isotope of Barium