which phrase describes one characteristic of radioactive elements?\nare produced in a laboratory\ndecay at a…

which phrase describes one characteristic of radioactive elements?\nare produced in a laboratory\ndecay at a constant rate\nhave a consistent number of particles\nrelease energy and particles to maintain radioactivity
Answer
Answer:
B. decay at a constant rate
Brief Explanation:
Radioactive elements have a fixed half - life, decaying at a constant rate. Some occur naturally, not all are lab - produced. The number of particles changes during decay, and they release energy and particles to become stable, not to maintain radioactivity.