Cloned animals A. Have a longer lifespan than animals not cloned
B. Cannot reproduce
C. Are not formed by sexual reproduction
D. Will always have identical personalities

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!

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~ trueboss72