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Question

Which of the following is radioactive in nature?

A
Oxygen
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B
Sulphur
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C
Tellurium
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D
Polonium
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Solution

The correct option is D Polonium
Answer: d
Explanation: Oxygen is the most non-metallic element of group 16. Sulphur is also a typical non-metal and tellurium is a metalloid. Polonium is, however, metallic in nature but is radioactive.

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