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 (Steve Harley & Cockney Rebel song) to the album's theme: "...what it is, though, is a fine record that shows Harley obsessed with cabaret and color this time out as evidence the title - "Red is a Mean, Mean Color", "White White Dove", and "Black or White"." Dave Thompson of AllMusic retrospectively reviewed "Timeless Flight" and felt the song displayed "deliberately impenetrable wordplay", but highlighted it as an album standout by labeling it an AMG Pick Track. In 2003 Martin Aston of "Q" wrote: ""Timeless Flight" bears plenty of Harley's melodic hallmarks, but some complex tripwires keep popping up: "Black or White" is a rare showing