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 Red such as "may not guess black", "player must drink from the opposite side of their glass", etc., or that if a player guesses wrongly they must drink the number of sips shown on the card, while if they guess correctly they may distribute that number of sips to other players. Black or Red Black or Red is an American card game, often played as a drinking game. In its most basic form it is one of the least complicated of drinking games. Gameplay requires a standard 52-card deck and may be played with any number of participants, to include a