How many covalent bonds are required to connect to oxygen atoms together?

Answer 1

oxygen contains 6 electrons in its outermost shell contains ,to complete its octet it shares 2 electrons and hence form two covalent bonds(1 sigma and 1 pi bond).

Answer 2

Two oxygen atoms connect via a double covalent bond, sharing a total of four electrons (two from each atom). This bond allows the oxygen atoms to achieve a stable electron configuration by filling their outermost energy level with eight electrons.

Answer 3

Technically, there is only one covalent bond, but since it involves four atoms, it is usually called a "double" bond. Therefore, an answer of two might be preferred.