Metallic tellurium - Kinzokuteru

Japanese: 金属テルル - きんぞくてるる
Metallic tellurium - Kinzokuteru


[nature]
When it is reduced in a solution of telluric acid with sulfur dioxide, it becomes an amorphous black or silvery gray powder. The silvery gray metallic tellurium obtained by electrolysis or melting has a hexagonal crystal system with a = 4.447 Å, c = 5.915 Å, and the crystal structure is the same as that of gray selenium, with tellurium atoms forming helical chains and weak metallic bond-like interactions between adjacent atoms in different chains. It has a Mohs hardness of 2.5, making it brittle.

*Some of the terminology that refers to "metallic tellurium" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:


[性質]
 亜テルル酸溶液に二酸化硫黄を通して還元したものは無定形の黒色ないし銀灰色粉末である。電気分解や融解して得られた銀灰色の金属テルルは六方晶系a=4.447Å,c=5.915Åで,結晶構造は灰色セレンと同じで,テルル原子がらせん鎖をつくっており,隣りあった別の鎖の原子との間に金属結合的な弱い相互作用がある。モース硬度2.5で,もろい。…

※「金属テルル」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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