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Which of the following features is NOT a characteristic of natural radioactivity?

Physics
JAMB 1985

Which of the following features is NOT a characteristic of natural radioactivity?

  • A. Radioactivity is a nuclear phenomenon
  • B. Radioactivity is exhibited only by elements of mass number greater than 206
  • C. The radioactivity of an element is affected by electric and magnetic fields in the surroundings
  • D. Radioactive substances emits three types of radiations, a-rays, \(\beta\)-rays and y-rays
  • E. The radioactive element is transformed into a new element
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Correct Answer: Option B
Explanation

Natural radioactivity is exhibited by elements of atomic numbers of 83 or more

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