Choose two spheres and write how they can possibly interact.

idk what the question is about

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).

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!

if you need further assistance, let me know: )

~ trueboss72