Metalloid

Japanese: metalloid
Metalloid

…However, elements near the boundary such as silicon, germanium, tin, arsenic, antimony, bismuth, and tellurium often behave in an intermediate state between the two, and exhibit a series of unique properties, such as being metallic or nonmetallic, or semiconducting, depending on the conditions. For this reason, they are sometimes called "metalloids." Metallic elements are also defined as "elements that easily become positive ions through chemical reactions," that is, electropositive elements. …

*Some of the terminology that mentions "metalloid" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…しかし境界線付近のケイ素,ゲルマニウム,スズ,ヒ素,アンチモン,ビスマス,テルルなどの元素はしばしば両者の中間的な挙動を示し,条件によって金属的な形態と非金属的な形態をとるものや,半導体となるものなど,一連の特異な性質が現れる。そのため,これらを〈半金属metalloid〉と呼ぶこともある。金属元素はまた〈化学変化によって陽イオンになりやすい元素〉,すなわち電気的陽性の元素とも定義される。…

※「metalloid」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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