* Oxygen atoms are neutral: Each oxygen atom has 8 protons (positive charge) and 8 electrons (negative charge). This makes them electrically neutral.
* Covalent bonding in O2: In an oxygen molecule, two oxygen atoms share two pairs of electrons (a double bond). This sharing is equal, meaning the electrons are distributed evenly between the two atoms.
* Equal sharing of electrons: Since the electrons are shared equally, there is no imbalance of charge on either oxygen atom within the molecule.
Therefore, the overall charge of an oxygen molecule (O2) is zero.