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>For alternative meanings see metal (disambiguation). In chemistry, a metal (Greek: Metallon) is an element that readily forms ions (cations) and has metallic bonds, and metals are sometimes described as a lattice of positive ions (cations) in a cloud of electrons. The metals are one of the three groups of elements as distinguished by their ionisation and bonding properties, along with the metalloids and nonmetals. On the periodic table, a diagonal line drawn from boron (B) to polonium (Po) separates the metals from the nonmetals. Elements on this line are metalloids, sometimes called semi-metals; elements to the lower left are metals; elements to the upper right are nonmetals. See more at Wikipedia.org...

>This article is about the colour. For other meanings of "gray" or "grey", see Grey (disambiguation).'' Grey or gray (the latter more usually in American English) is a colour seen commonly in nature. It is created by mixing white and black in different proportions. Depending on the amount of light, the human eye can interpret the same object as either grey or some other colour. See more at Wikipedia.org...