• Name: Arsenic

  • Symbol: As

  • Number of Energy Levels: 4

  • Electrons on the outer energy level: 5

  • Atomic Number: 33

  • Atomic Mass: 74.9216 Amu

  • Protons / Electrons: 33

  • Neutrons: 42

  • Density: 5.72 g/cm3

  • Classification: Metalloid

Top 18 interesting facts about Arsenic

  • Arsenic was discovered in ancient time and its discoverer is unknown. Its name drives from Latin word "arsenicum" and the Greek word "arsenikos".
  • Arsenic's melting point is at 817.0 C (1090.15 K, 1502.6 F) and its boiling point is at 613.0 C (886.15 K, 1135.4 F).
  • Arsenic occurs in many minerals and also as a pure element.
  • Although its discoverer is unknown, Albertus Magnus was the first person who documented arsenic in 1250.
  • At the present time at least 33 isotopes of arsenic have been synthesized but 75-As is the only one stable isotope of arsenic.
  • Arsenic oxidizes in air when heated having a smell similar to the smell of garlic.
  • Arsenic is the 53rd most abundant element in Earth's crust.
  • A half of the world's production of arsenic is made in China.
  • Arsenic is used as a wood preservative since it is toxic to insects, bacteria, and fungi.
  • Arsenic is used in insecticides in agriculture and in various poisons.
  • Arsenic is used in feed additives in poultry and swine production, although it has negative consequences on human health.
  • In medicine, arsenic is used for treating leukemia (blood cancer) and psoriasis.
  • Alloyed with lead, arsenic is used in car batteries as a strengthener of lead components.
  • Arsenic is used in semiconductors, especially alloyed with gallium, creating faster circuits.
  • Arsenic is used in bullets production.
  • Few species of bacteria use arsenic as fuel for metabolism.
  • Arsenic is absorbed by all plants with a higher concentration in apples, leafy vegetables, and rice.
  • Skin cancer has been associated with water that contains significant amount of arsenic.