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Elements that are in groups of two or more and have the same charge are polyatomic ions. They exist to help bond together with other polyatomic ions and generally work to form complex compounds. More »

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Some common biological polyatomic ions include phosphate, which is incorporated into nucleic acids, and ammonium, which is a product of nitrogen fixation. Citrate is an important intermediate in the citric acid cycle. Po... More »

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Many common polyatomic ions have an charge of -1, including acetate, bicarbonate, bisulfate, chlorate and chlorite. Other common polyatomic ions have a charge of -2, including carbonate, chromate, dichromate, hydrogen ph... More »

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Ionic bonds hold atoms together using the electrostatic charge between their positive and negative ions. These ions are formed when electrons are transferred between atoms, the net loss or gain determining if the ion is ... More »

www.reference.com Science Chemistry Atoms & Molecules

Many common polyatomic ions have an charge of -1, including acetate, bicarbonate, bisulfate, chlorate and chlorite. Other common polyatomic ions have a charge of -2, including carbonate, chromate, dichromate, hydrogen ph... More »

www.reference.com Science Chemistry Atoms & Molecules

Silicon ions can have a charge of positive four, positive two or negative four. The charge depends on the element with which the silicon has bonded. More »

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Charged groups of atoms are ions. Ions consist of one or more atoms that have gained or lost electrons. If the group gains electrons, it has a negative charge, and if it loses electrons, it becomes positive. More »

www.reference.com Science Chemistry Atoms & Molecules