What is Group 16 elements?

    

•  Group 16 contains five elements namely, Oxygen, Sulphur, Selenium, Tellurium, and Polonium.
• The first element of the group, they are also named as Oxygen family.
• The first elements of the group are non-metals.
• These are also collectively known as Chalcogens (meaning ore forming) because many metal ores occur as oxides, sulphides, etc,.
•  Oxygen is the most abundant element and constitutes 46.5 per cent of earth’s crust.
•  As, water it comprises 89 per cent of the ocean.
•  It also occurs free and constitutes free -state.
•  The other members of the family, Selenium, Tellurium and Polonium, are comparatively rare and constitute, respectively, only 10^-7, 10^-7and 10^-14 per cent of the earth’s crust.
•   The general outer electronic configuration of the elements of Group 16 may be written as ns²p⁴