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It becomes a negative ion.

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Zane Blick

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3y ago

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More answers

When an atom gains an electron, it becomes negatively charged and forms an anion. This process is known as reduction because the atom is gaining negatively charged particles. The added electron occupies a new energy level, causing the atom's size to slightly increase.

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AnswerBot

10mo ago
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Their charge increases and the size expands (only when the adding electrons is added to its new orbital viz s,p,d,f)

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Wiki User

12y ago
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it becomes stable

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Wiki User

13y ago
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Q: What happened when an atoms gains an electron?
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