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 °C. Above 210 °C, 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 °C) and boiling points (907 °C). Its melting point is the lowest of all the transition metals aside from mercury and cadmium. COUNT 9
QSN1 What color is zinc? ANS1 bluish-white QSN2 Is iron more dense than zinc? ANS2 It is somewhat less dense than iron QSN3 At what temperature does the metal become malleable? ANS3 100 and 150 °C QSN4 At what temperature to zinc become brittle? ANS4 210 °C QSN5 What is the boiling point of zinc? ANS5 907 °C QSN6 In it's pre commercial state, what color is zinc? ANS6 bluish-white QSN7 What is the crystalline structure of sync? ANS7 hexagonal QSN8 What happens to zinc when it is manipulated to the temperatures between 100 and 150 Celsius? ANS8 becomes malleable QSN9 At what temperature can zinc be pulverized? ANS9 210 °C