Elements of Groups 16, 17 and 18 — Chemistry STD 12 Science — Question
Maharashtra BoardEnglish MediumSTD 12 ScienceChemistryElements of Groups 16, 17 and 182 Marks
Question
How do selenium, tellurium and poloniumoccur?
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Answer
Selenium and tellurium are found as metal selenides and tellurides in sulphide ores. Polonium occurs in nature as a decay product of thorium and uranium metals.
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