GED Science Practice

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What is the term for the time required for one half of the atoms of a radioisotope to emit radiation and decay products?

  1. Halflife

  2. Hard water

  3. Hemoglobin

  4. Homeostasis

The correct answer is: Halflife

Radioisotopes are unstable atoms that emit radiation and decay products over time. Half-life refers to the amount of time it takes for half of the atoms in a given sample of a radioisotope to undergo this decay process. This is a specific term used to describe the decay rate of a radioisotope and is not related to hard water, hemoglobin, or homeostasis. Therefore, options B, C, and D are incorrect and do not accurately describe the time required for radioactive decay. Option A, halflife, is the correct term used to describe this process.

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