Emission of -rays from radioactive elements results in:

Correct answer: C. Polonium

  • A. Bismuth
  • B. Protactinium
  • C. Polonium
  • D. Palladium

Explanation

The emission of gamma rays, or γ-rays, from radioactive elements is a process that typically occurs when an unstable nucleus undergoes radioactive decay. Gamma rays are high-energy electromagnetic radiation that does not alter the atomic number or mass number of the element; thus, the element does not change into another element. Polonium is known to emit gamma rays as part of its decay process. On the other hand, Bismuth, Protactinium, and Palladium are not commonly associated with gamma ray emission due to their typical decay modes or stable nature.

This question appeared on the UHS MDCAT 2016 paper, which you can sit online with every answer explained.

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About Radioactive Decay

Radioactive decay is the spontaneous transformation of unstable nuclei, described by decay constant, activity, half life and the exponential decay law. Work includes alpha, beta and gamma emissions, decay equations and remaining nuclei, with half life distinguished from the time required for complete decay.

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