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2 June, 05:28

Which ion gained 2 electrons and now has 34?

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  1. 2 June, 07:14
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    When a selenium atom gains two electrons there are two more negative charges (36 electrons) than positive charges (34 protons). As a result, the ion has a 2 - charge. The symbol for the ion is Se2-. Negative ions are called anions.
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