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Hydrogen

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Q: Which element can form both positive and negative ions?
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Will atoms of a non metallic element form positive or negative ions?

Positive ions


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Sin uranium is a metal it will form negative ions.


Which list pairs each element in the table salt NaCI negitve or positive?

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What is the charge on the ion typically formed by each element?

Metals tend to form cations, or ions with a positive charge. Nonmetals tend to form anions, or ions with a negative charge. Remember that ions form to put the element in noble gas configuration with 8 valence electrons. Elements forming ions will take the most direct addition or subtraction of electrons to achieve this.


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