Which of the following atoms would have the greatest velocity if each atom had the same kinetic energy?

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.

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i think its 100.

hope this !

the correct answer to this question is 2