Element in life processes
Elements occurring in living organisms. These include those that are necessary for life (bioelements), neutral elements and those that have a toxic effect.
6CCarbonblack, metallic-looking (graphite); clear (diamond) 8OOxygencolorless (gas); pale blue (liquid and solid) 9FFluorinevery pale yellow (gas); bright yellow (liquid); alpha is opaque, beta is transparent (solid) 15PPhosphoruswhite, red and violet are waxy, black is metallic-looking 19KPotassiumsilvery white, faint bluish-purple hue when exposed to air 26FeIronlustrous metallic with a grayish tinge 28NiNickellustrous, metallic, and silver with a gold tinge 34SeSeleniumgrey metallic-looking, red, and vitreous black allotropes 53IIodinelustrous metallic gray (solid); black/violet (liquid); violet (gas)