Tend to lose electrons in chemical reactions, forming positive ions. nonmetals tend to electrons in chemical reactions, forming negative ¬¬¬¬¬¬¬ions. gaining or losing electrons makes an atom an gaining or losing makes an atom an isotope. however, gaining or losing a makes an atom into a completely different

answer:

the answer is 6 valence electrons.

explanation:

valence is the # of electrons on the outer most shell of an atom.

oxygen has 6.

although, the valency of oxygen is 2, because it only needs to make 2 covalent bonds, or gain 2 electrons, to achieve the stable octet configuration of a noble gas.

that's it!

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~ trueboss72

answer7,570,82356 cubic centimeters;