How much an element depends on its configuration. a) gases are the reactive elements because their outer energy levels are with electrons. (except He, which is full with 2)b) In most chemical reactions, atoms try to the electron configurations of the noble gases by either or electrons.

the answer is true.

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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