Zinc

By: Micaela Dalia

Basic Information

  • Atomic Number: 30
  • Group: 12
  • Atomic Weight: 65.38
  • Symbol: Zn
  • Classification: Metallic
  • Period: 4

Properties

  • Solid state
  • Non-toxic
  • Density of 7140 kg

Its History

  • Discovered by Andreas Marggraf in 1746 in Germany
  • Also found in a brass dating back to 1400-1000 BC in Palestine
  • Found in an ally containing 87% zinc in prehistoric ruins of Transylvania
  • Metallic zinc was first produced in the 13th century in India
  • Was later rediscovered in Europe
  • William Champion set up zinc industry in England in 1740s

Uses

Zinc is used in many things, including:


  • insulin
  • animal and plants diet
  • multiple enzymes

Description

  • bluish white in colour
  • lustrous
  • brittle at low temperatures
  • malleable at 100-150° Celsius
  • Conducts electricity
  • Burns in air at high red heat with white clouds from oxide

In The Earth

  • Zinc plays an important role in human reproduction
  • has to do with sexual maturation in humans
  • some organisms accumulate zinc
  • Zinc shortages all over the world is a problem

Fun Facts

  • zinc-deficient animals need 50% more food to gain the same weight as animals with an adequate amount of zinc in their diets
  • Originated from the German word "zink"
  • it is never found as a free metal
  • important deposits are located in North America and Australia