Bound electron

Japanese: bound electron(英語表記)boundelectron
Bound electron

…In particular, the conduction electrons of metals are often called free electrons. In contrast to free electrons, electrons that are bound to atoms or molecules and cannot move freely are called bound electrons. The concept of free electrons in matter was first proposed at the beginning of the 20th century by Germans Paul Karl Ludwig Drude (1863-1906) and HA Lorentz, who showed that if the valence electrons of metals are considered to exist as a gas of free electrons, the electrical conductivity, thermal conductivity, optical properties, etc. of metals can be roughly explained. …

*Some of the terminology explanations that mention "bound electron" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…とくに金属の伝導電子を自由電子と呼ぶことが多い。自由電子に対して,原子や分子などの中に束縛されて自由に運動できない電子は束縛電子bound electronと呼ばれる。物質中の自由電子の概念は,20世紀の初め,ドイツのドルーデPaul Karl Ludwig Drude(1863‐1906)とH.A.ローレンツが,金属の価電子が自由電子のガスとして存在すると考えると,金属の電気伝導,熱伝導,光学的性質などをおおよそ説明できることを示したのが最初である。…

※「bound electron」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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