Precious metals - Kinakinzoku

Japanese: 貴な金属 - きなきんぞく
Precious metals - Kinakinzoku

…The heaviest metal is osmium (22.57), followed by iridium (22.42).
[Noble metal and base metal]
Metals that have a higher potential than hydrogen in an aqueous solution (the reverse of the ionization tendency sequence), which is one of the chemical properties of elements, are generally called noble metals, and include gold, silver, platinum, mercury, copper, etc. Most of the others are base metals. …

*Some of the terminology that refers to "precious metals" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…最も重い金属はオスミウム(22.57)で,イリジウム(22.42)がこれに次ぐ。
[貴な金属と卑な金属noble metal and base metal]
 元素の化学的性質の一つである水溶液中での標準電位系列(イオン化傾向序列の逆)で水素よりも高い電位にある金属を一般に貴な金属といい,金,銀,白金,水銀,銅などが含まれる。他の多くは卑な金属である。…

※「貴な金属」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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