What is the oxidation number of elements in group 16?

Elements in Group 16, also known as the Chalcogens, have six valence electrons. The most common oxidation state for Group 16 elements is -2, as they tend to gain two electrons to achieve a stable octet.

However, some elements in Group 16 can exhibit positive oxidation states. For example, sulfur can have an oxidation state of +4 or +6, depending on the compound it is part of. Oxygen can also have a positive oxidation state, typically +2, in compounds such as hydrogen peroxide.

Overall, the oxidation state of Group 16 elements can vary depending on the compound and its chemical environment.