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When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?
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When an atom of iron loses all of its 4s electrons and one of its 3d electrons, what is its charge?

User Hannes M
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There are two electrons in 4s and 6 in 3d. When you lose 3 electrons, you will be left with an ion of 3+ charge!
User Techvice
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