Group 16 element (except polonium ) are called chalcogens because

Options

A. a large number of acids contain these elements paticularly oxygen and sulphur
B. these element of particularly `O` and `S` are present in many metallic ores mainly as oxide and sulphides
C. all these elements exhibits allotropy
D. these element mainly form anions.

Answer

2

Explanation

Because a large number of metal ores are either oxides or sulphides.The name chalcogens is derived from the Greek word for brass and points to the association of sulphur and its congeners with copper.Most copper minerals contains either oxygen or sulphur and frequently the other members of the group.