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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explanation:

each principal energy level above the first contains one s orbital and three p orbitals. a set of three p orbitals, called the p sublevel, can hold a maximum of six electrons. therefore, the second level can contain a maximum of eight electrons - that is, two in the s orbital and 6 in the three p orbitals.

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