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

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

A. radioactivity is a nuclear phenomenon

B. radioactivity is exhibited only by the element 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 emit three types of radiations ∝-rays, β-rays and γ-rays.

QUICK ANSWER…

C

DETAILS…

Radioactivity is the spontaneous nuclear disintegration of an element to liberate single or any combination of alpha, beta, and gamma rays.

Radioactivity is mainly a nuclear affair which alters the neutron and proton found in the nucleus of an atom, external factors like temperature, electric and magnetic fields are not powerful enough to influence this…

Now for the right answer to the above question:

  1. Option A is incorrect. yes, it is true that radioactivity is a nuclear affair.
  2. Option B is incorrect. it is also true that radioactivity is exhibited by elements whose mass number is greater than 206.
  3. C is correct. no, it is not true that the radioactivity of an element is affected by nearby electric and magnetic fields.
  4. D is not the correct answer. It is true that radioactivity emits three types of radiation.
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KEY-POINTS…

You may please note these/this:

  • Remember that this question asks to identify the false characteristics.
  • Electric and magnetic fields may attract or repel products of radioactivity, but they do not in any way interfere with the phenomenon itself.
  • All isotopes of elements whose mass numbers are greater than 206, and atomic numbers greater than 83 are radioactive.

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/ culled from 2016 JAMB-UTME physics past question 34 /

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

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