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Which of the following is radioactive in nature?(a) Oxygen(b) Sulphur(c) Tellurium(d) PoloniumThis question was posed to me during an online exam.This question is from P-Block in section P-Block Elements of Chemistry – Class 12

Answer»

The correct ANSWER is (d) Polonium

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 with a SHORT half-life (13.8 days).



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