The elements oxygen and sulphur are called chalcogens because
The elements oxygen and sulphur are called chalcogens because
A. their properties resemble with charcoal
B. their properties resemble not only with charcoal but also with halogens
C. these are ore forming elements
D. these combine with halogens.
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Correct Answer - C
Chalcogens mean ore forming elements because most of the ores are either oxides or sulphides.
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