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Gray, or metallic arsenic, pictured under an argon atmosphere. Gray arsenic, also called grey arsenic or metallic arsenic, is the most stable allotrope of the element at room temperature, and as such is its most common form. [1] This soft, brittle allotrope of arsenic has a steel gray, metallic color, and is a good conductor. [2]
Grey arsenic is a semimetal, but becomes a semiconductor with a bandgap of 1.2–1.4 eV if amorphized. [24] Grey arsenic is also the most stable form. Yellow arsenic is soft and waxy, and somewhat similar to tetraphosphorus (P 4). [25]
Usage on el.wikipedia.org Αρσενικό και παλιά δαντέλα (ταινία) Μαύρη κωμωδία; Usage on es.wikipedia.org Arsenic and Old Lace; Usage on eu.wikipedia.org Arsenic and Old Lace (filma) Usage on fr.wikipedia.org Arsenic et Vieilles Dentelles (film) Bande-annonce; Usage on ja.wikipedia.org 毒薬と老嬢 (映画)
The value for phosphorus refers to pressurizing black phosphorus. The value for arsenic refers to pressurizing metastable black arsenic; grey arsenic, the standard state, is already a metallic conductor at standard conditions. No value is known or theoretically predicted for radon.
For more guidance, see Wikipedia:Translation Not to be confused with Arsenic . Ärsenik is a rap group based in Villiers-le-Bel , France , founded in 1992, and made up of two brothers, Lino (Gaëlino M'Bani) and Calbo (Calboni M'Bani), whose family is originally from Congo .
Arsenic (33 As) has 32 known isotopes and at least 10 isomers. Only one of these isotopes, 75 As, is stable; as such, it is considered a monoisotopic element. The longest-lived radioisotope is 73 As with a half-life of 80 days.
In the room-temperature form, the zinc atoms are tetrahedrally coordinated and the arsenic atoms are surrounded by six zinc atoms at the vertices of a distorted cube. The crystalline structure of zinc arsenide is very similar to that of cadmium arsenide (Cd 3 As 2), zinc phosphide (Zn 3 P 2) and cadmium phosphide (Cd 3 P 2).
Hoboken supplied β-arsenic with a purity of 99.999%. Stoichiometric proportions of the elements cadmium and arsenic were heated together. Separation was difficult and lengthy due to the ingots sticking to the silica and breaking. Liquid encapsulated Stockbarger growth was created. Crystals are pulled from volatile melts in liquid encapsulation.