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ATOMS THAT ARE NONMETALS WILL FORM ANIONS (NEGATIVE IONS) IF GIVEN THE CHANCE WHEN ELECTRONS ARE AVAILABLE FROM THE FORMATION OF CATIONS (POSITIVE IONS).

THE ELECTRONS NEED A HOME, EITHER WITH THEIR ORIGINAL ATOMS, OR IF CATIONS FORM, THEN WITH ANIONS THAT MUST FORM AT THE SAME TIME.

CHARGE MUST BE CONSERVED IN ANY CHEMICAL OR PHYSICAL CHANGE.

A negative ion is formed when an atom gains an electron, (because electrons have a negative charge).

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Hydrogen is the element that can form both positive (H+) and negative (H-) ions. When hydrogen gains an electron, it forms a negative ion, and when it loses an electron, it forms a positive ion.


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Negative oxygen ions, found in compounds such as hydroxide ions (OH-), can interact with positively charged ions in water such as hydrogen ions (H+), sodium ions (Na+), and potassium ions (K+) through electrostatic attractions to form various compounds or participate in chemical reactions.


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