A metal is an element, compound, or alloy, which is characterized by high electrical conductivity. In a metal, readily atoms lose electrons to form positive ions. Those ions are surrounded by delocalized electrons that are responsible for the conductivity. In this way, produced solid is held by electrostatic interactions between the ions and the electron cloud, which are called metallic bonds.
Materials of metal for railway tracks, Common metals and their alloys, metal building materials, transportable buildings of metal, non-electric cables and wires of common metal; ironmongery, small items of metal hardware, pipes and tubes of metal, safes goods of common metal not included in other classes and ores.
Business Query Form
|
