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トピック: arsenic
説明については、 arsenic
Arsenic (; also when attributive) is the chemical element that has the symbol As and atomic number 33. Arsenic was first documented by Albertus Magnus in 1250. Its atomic mass is 74.92. Arsenic is a notoriously poisonous metalloid with many allotropic forms, including a yellow (molecular non-metallic) and several black and grey forms (metalloids). Three metalloidal forms of arsenic, each with a different crystal structure, are found free in nature (the minerals arsenic ''sensu stricto'' and the much rarer arsenolamprite and pararsenolamprite). However, it is more commonly found as arsenide and in arsenate compounds, several hundred of which are known. Arsenic and its compounds are used as pesticides, herbicides, insecticides and in various alloys.
定義については、 arsenic
a very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
関連トピック arsenic
Arsenic, Arsenic contamination of groundwater, Arsenic trioxide, Arsenic sulfide, Gertrude Yorkes, Isotopes of arsenic, Alchemical symbol, Arsenic poisoning, Arsenic trichloride, Arsenic acid, Arsenic pentoxide, Arsenic trifluoride, Arsenic pentafluoride, Arsenic trisulfide, Arsenic and Old Lace (play), Arsenic pentachloride, Arsenical bronze, Arsenic toxicity, Arsenic and Old Lace (film), Arsenic tribromide
