Period 3 element phosphorus originates from oxidation of the white (but not red) phosphorus and should be called chemiluminescence. It is also the lightest element to easily produce stable exceptions to the octet rule. The vast majority of phosphorus compounds are consumed as fertilizers. Other applications include the role of organophosphorus compounds in detergents, pesticides and nerve agents, and matches. "Sulfur" (symbol S) is an abundant, multivalentnon-metal. Under normal conditions, sulfur atoms form cyclic octatomic molecules with chemical formula S. Elemental sulfur is a bright yellow crystalline solid when at room temperature. Chemically, sulfur can react as either an oxidant or reducing agent.
Red-violet refers to red-violet as "purple"; in the Munsell color system, this color at the maximum chroma of 12 is called "Red-Purple". This convention is for chromatic purposes, since Red-Purple lies between violet and printer's magenta (the color regarded as magenta before the invention of the color electric magenta for computer displays). Red-violet is part of the red "analogous color group", which also includes magenta, red, red-orange, orange, gold, and yellow, i.e. those colors classified as "Warm colors", or colors that produces a feeling of warmth (as opposed to "cool colors"). The color that is the complement of red-violet, mint green,