Ultimate Particle - Ultimate Particle

Japanese: 究極粒子 - きゅうきょくりゅうし
Ultimate Particle - Ultimate Particle


[Chemical elements and simple substances]
An element is an ultimate factor (atomic species) of matter that is determined by a specific atomic number (number of protons or number of nuclear charges). Atomic Number There are 107 known elements, ranging from 1 to 10 (Table 1-I, II, III, IV, V). To avoid confusion with the term element (sometimes written as atomic element) when used in a different sense, they are sometimes called chemical elements. Among real substances (molecular species), the properties of a particular element are expressed in a wide variety of forms, but the origin of these properties is determined by the atomic number, and all of the properties specific to a given element can be traced back to its atomic number.

*Some of the terminology that refers to "ultimate particles" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:


【化学元素と単体】
 特定の原子番号(陽子数または核荷電数)によって規定される,物質構成の究極因子(原子種)を元素という。現在,原子番号から107に至る107種の元素が知られている(表1-I,II,III,IV,V)。別の意味で元素(原素と書くこともある)という語が用いられる場合との,用語としての混同を避ける意味で,とくに化学元素chemical elementと呼ぶこともある。実在する物質(分子種)のなかで,特定の元素が示す性質は,さまざまな形をとって多種多様に発現するが,それらの性質の根源は,すべて原子番号によって規定され,ある元素に固有の諸性質は,そのすべてが原子番号に帰着される。…

※「究極粒子」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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