Q:

‘Half-life’ when applied to atoms of a radioactive isotope refers to the:

waelhammad
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2022-10-21
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‘Half-life’ when applied to atoms of a radioactive isotope refers to the:

  1. midpoint of the time span for which the isotope will emit its radiation.
  2. effective time for which the isotope is considered to be dangerous.
  3. length of time taken for half of the isotope to emit its radiation.
  4. time after which the radioactivity of the sample is half of its original value.
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waelhammad
2022-10-21
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C: This is the best answer. Half-life refers to the atoms of an isotope of the one element. The daughter nuclei may themselves also be radioactive and so contribute to the radioactivity of the samp

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