Transuranium elements - Chourangenso

Japanese: 超ウラン元素 - チョウウランゲンソ
Transuranium elements - Chourangenso

An artificial radioactive element with an atomic number of 93 or higher. Prior to 1940, uranium, with atomic number 92, was the last element in the periodic table that existed in nature, but after element 93, neptunium, was discovered through nuclear reactions, elements with atomic numbers higher than uranium came to be called transuranium elements. The 2008 IUPAC periodic table includes elements up to 111. Elements up to element 103, lawrencium, belong to the actinide family. Elements from element 104, rutherfordium, onwards are transition elements. Elements from 104 onwards are also called transactinide elements. [See alternative terms] Neptunium, plutonium, americium, curium, berkelium, californium, einsteinium, fermium, mendelevium, nobelium, lawrencium, rutherfordium, dubnium, seaborgium, bohrium, hassium, meitnerium, darmstadtium, roentgenium, copernicium, ununtrium, flerovium, ununpentium, livermorium, ununoctium

Source: Morikita Publishing "Chemical Dictionary (2nd Edition)" Information about the Chemical Dictionary 2nd Edition

Japanese:

原子番号93番以上の人工放射性元素.1940年以前には自然界に存在する元素のなかで,原子番号92のウランが周期表の最後の元素であったが,原子核反応で93番元素ネプツニウムが見いだされたため,ウランより原子番号の大きい元素を超ウラン元素とよぶようになった.2008年のIUPACの周期表には,111番元素まで記載されている.103番元素ローレンシウムまではアクチノイドに属する元素.104番元素ラザホージウム以降は遷移元素.また,104番以降は超アクチノイド元素ともよばれる.[別用語参照]ネプツニウム,プルトニウム,アメリシウム,キュリウム,バークリウム,カリホルニウム,アインスタイニウム,フェルミウム,メンデレビウム,ノーベリウム,ローレンシウム,ラザホージウム,ドブニウム,シーボーギウム,ボーリウム,ハッシウム,マイトネリウム,ダームスタチウム,レントゲニウム,コペルニシウム,ウンウントリウム,フレロビウム,ウンウンペンチウム,リバモリウム,ウンウンオクチウム

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