WordNet

a stable particle with positive charge equal to the negative charge of an electron
a nonmetallic univalent element that is normally a colorless and odorless highly flammable diatomic gas; the simplest and lightest and most abundant element in the universe (同)H, atomic number 1
a particle that is electrically charged (positive or negative); an atom or molecule or group that has lost or gained one or more electrons

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プロトン,陽子(素粒子の一つ)
『水素』(化学記号は『H』)
イオン

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出典(authority):フリー百科事典『ウィキペディア（Wikipedia）』「2016/04/15 15:05:44」(JST)

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Hydrogen ion is recommended by IUPAC as a general term for all ions of hydrogen and its isotopes.^[1] Depending on the charge of the ion, two different classes can be distinguished: positively charged ions and negatively charged ions.

Cation (positively charged)

Hydronium ion

Zundel cation

When hydrogen loses its electron, the following cations can be formed:

Hydron: general name referring to the positive ion of any hydrogen isotope (H⁺)
Proton: ¹H⁺ (i.e. the cation of protium)
Deuteron: ²H⁺, D⁺
Triton: ³H⁺, T⁺

In addition, the ions produced by the reaction of these cations with water as well as their hydrates are called hydrogen ions:

Hydronium ion: H₃O⁺
Zundel cation: H₅O₂⁺ (named for Georg Zundel)
Eigen cation: H₉O₄⁺ (named for Manfred Eigen)

Zundel cations and Eigen cations play an important role in proton diffusion according to the Grotthuss mechanism.

In connection with acids, "hydrogen ions" typically refers to hydrons.

Hydrogen atom (center) contains a single proton and a single electron. Removal of the electron gives a cation (left), whereas addition of an electron gives an anion (right). The hydrogen anion, with its loosely held two-electron cloud, has a larger radius than the neutral atom, which in turn is much larger than the bare proton of the cation. Hydrogen forms the only cation that has no electrons, but even cations that (unlike hydrogen) still retain one or more electrons are still smaller than the neutral atoms or molecules from which they are derived.

Anion (negatively charged)

Hydrogen anions are formed when additional electrons are acquired:

Hydride: general name referring to the negative ion of any hydrogen isotope (H⁻)
Protide: ¹H⁻
Deuteride: ²H⁻, D ⁻
Tritide: ³H⁻, T ⁻

References

^ Compendium of Chemical Terminology, 2nd edition McNaught, A.D. and Wilkinson, A. Blackwell Science, 1997 [ISBN 0-86542-684-8], also online

This article includes a list of related items that share the same name (or similar names).
If an internal link incorrectly led you here, you may wish to change the link to point directly to the intended article.

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Visa M1, Bogatu C2, Duta A3.
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Japanese Journal

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Related Pictures

★リンクテーブル★

リンク元	「5H5T」「H+」「水素イオン」
関連記事	「ion」「ION」

「5H5T」

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関: 無脈性電気活動

hypovolemia	循環血液量減少
hypoxia	低酸素血症
hypothermia	低体温
hyperkalemia/hypokalemia	高K血症/低K血症
hydrogen ion	アシドーシス
tamponade	心タンポナーデ
tension pneumothorax	緊張性気胸
tablet	薬物中毒
thrombosis, pulmonary	肺塞栓
thrombosis, coronary	急性心筋梗塞