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 or White the US, selling over one million copies and became the second best selling single of the year. As of August 2018 the song further certified two time platinum for the digital sales. Reviews of the song were generally favorable. David Browne praised: "He still knows how to fashion a hook that will take up permanent residence in your brain (away from its video, "Black or White" is spare and effortless)" "Rolling Stone"s Allan Light in his "Dangerous" review, compares the song unfavourably to "Beat It": "Neither this slow-burn solo nor the Stones-derived riff on 'Black or White' offers the catharsis