Oxygen has six electrons in its outer shell. as a result, oxygen can form up to bonds with other elements. a. 2 b. 3 c. 4 d. 1

The correct answer is A. 2

Explanation:

Oxygen atomic number is 8 so it has 8 electrons, 2 electrons are in inner orbit and 6 electrons are present in outer orbit. So to become balance it needs 2 electrons to complete 8 electrons in its outer orbit. By making one bond it can get one electron.

So to get two electrons it has to form two bonds with other elements. For example, one oxygen atom forms two covalent bonds with two hydrogen atom to form H₂O. Two oxygen atoms can share its two valence electrons to become stable by making two covalent bonds between them.  

So As a result, oxygen can form up to 2 bonds with other elements.