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This page provides a simple browsing interface for finding entities described by a property and a named value. Other available search interfaces include the page property search, and the ask query builder.
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- Proton + (The terms '''proton''' p and [[hydrogen ion]] … The terms '''proton''' p and [[hydrogen ion]] H<sup>+</sup> are used synonymously in chemistry. In particle physics, a proton is a subatomic particle with a positive electric charge. Protons and neutrons are collectively referred to as ''nucleons''. The proton is a bare charge with only about 1/64 000 of the radius of a hydrogen atom, and so the free proton is extremely reactive chemically. Therefore, the free proton has an extremely short lifetime in aqueous solutions where it forms the [[hydronium ion]], H<sub>3</sub>O<sup>+</sup>, which in turn is further solvated by water molecules in clusters such as H<sub>5</sub>O<sub>2</sub><sup>+</sup> and H<sub>9</sub>O<sub>4</sub><sup>+</sup>.;sub>5</sub>O<sub>2</sub><sup>+</sup> and H<sub>9</sub>O<sub>4</sub><sup>+</sup>.)