Zinc
Zinc is a bluish-white, lustrous, diamagnetic metal, though most common commercial grades of the metal have a dull finish. It is somewhat less dense than iron and has a hexagonal crystal structure, with a distorted form of hexagonal close packing, in which each atom has six nearest neighbors (at 265.9 pm) in its own plane and six others at a greater distance of 290.6 pm. The metal is hard and brittle at most temperatures but becomes malleable between 100 and 150 degC. Above 210 degC, the metal becomes brittle again and can be pulverized by beating. Zinc is a fair conductor of electricity. For a metal, zinc has relatively low melting (419.5 degC) and boiling points (907 degC). Its melting point is the lowest of all the transition metals aside from mercury and cadmium.
At what temperature to zinc become brittle?
210 degC
Above 210 degC, the metal becomes brittle again and can be pulverized by beating.
zinc