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www.reference.com/article/formula-oxide-ion-3348d3185e216fb7

The formula for an oxide ion is O2-, which shows that it is an anion. An oxide is a compound formed by the combination of oxygen and another element. Oxygen can form many different oxide compounds with both metals and nonmetals.

www.reference.com/article/ions-formed-efe7ca434c2a367c

Ions are formed when an atom loses or gains its electrons and protons. An ion is different than a neutral atom because a neutral atom has an equal number of protons and neutrons within it.

www.reference.com/article/hydrogen-ion-54c60857edfe6fbf

A hydrogen ion refers to the nucleus of a hydrogen ion isolated from its electron. The term is also commonly used to refer to the hydrogen ion in water solutions.

www.reference.com/article/ion-formed-c2ccd3a56ccd6bd1

When an atom or group of atoms loses or gains electrons or protons, it becomes an ion. The primary difference between normal atoms and ions is that normal atoms typically have a neutral charge while ions are either positively or negatively charged. When atoms gain proto...

www.reference.com/article/oxidants-bad-ce1bc66667829cb4

According to the National Center for Biotechnology Information, oxidants are bad because they damage cells. Living Healthy 360 goes on to explain that this damage occurs because molecules that are oxidized lose electrons and become free radicals, which in turn oxidize o...

www.reference.com/article/polyatomic-ions-b7e26d7a3b9ce523

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.

www.reference.com/article/calcium-oxide-used-1aa7f6fbcf092fba

Calcium oxide, also called quicklime, is a chemical compound used in many different industries for different applications. In the metallurgy and steel industries, calcium oxide is useful for purifying or melting metals. Likewise, in the chemical industry, the applicatio...