Allotropes of phosphorus Allotropes of phosphorus Elemental phosphorus can exist in several allotropes, the most common of which are white and red solids. Solid violet and black allotropes are also known. Gaseous phosphorus exists as diphosphorus and atomic phosphorus. White phosphorus, yellow phosphorus or simply tetraphosphorus (P) exists as molecules made up of four atoms in a tetrahedral structure. The tetrahedral arrangement results in ring strain and instability. The molecule is described as consisting of six single P–P bonds. Two different crystalline forms are known. The α form is defined as the standard state of the element, but is actually metastable under standard
Black Element Software Black Element Software Black Element Software Co., LTD is a Czech video game developer based in Prague, Czech Republic. Prior to their acquisition by Bohemia Interactive Studio in 2010, they developed computer and console games directly. Black Element Software was founded in 2000 by the members of Insanity, known for their games Testament and Testament II. They released their first game, "", on 1 October 2004. In 2005, they joined with Bohemia Interactive Studio and Altar Games to form IDEA Games, which functioned as a publisher and consultant for several independent developers. On 30 September 2010, Black Element Software was