The half reaction of an oxidation-reduction reaction shows that iron gains electrons. What does this electron gain mean for iron?
CA.
It is neutralized,
B.
It is oxidized,
C.
It is reduced.
D.
It has dissolved,
E.
It has precipitated.
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58750.08068 is the answer i think

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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