Q: What term means the time in which half of the original number of radioactive nuclei in a sample decay?


Read this paragraph and choose the correct option from the provided answers:

Half-Life Why use a term like half-life rather than lifetime? The answer can be found by examining Figure 31.21, which shows how the number of radioactive nuclei in a sample decreases with time. The time in which half of the original number of nuclei decay is defined as the half-life, t 1 / 2 . Half of the remaining nuclei decay in the next half-life. Further, half of that amount decays in the following half-life. Therefore, the number of radioactive nuclei decreases from.

 Choices:

- reduced life

- quarter-life

- partial-life

- half-life


A:
half-life