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PRESENTATION OUTLINE

STRONTIUM, CERIUM, THALLIUM, AND FRANCIUM

SEAN KAUFMAN BLOCK 1
Photo by scienceatlife

STRONTIUM

  • Metallic silver rock
  • The symbol is Sr
  • Solid at room temperature
  • Grey and silver

STRONTIUM HISTORY

  • Adair Crawford
  • 1790
  • Scotland

STRONTIUM USES

  • Used to make brilliant red colors in fireworks and flare guns.
Photo by EpicFireworks

CERIUM PROPERTIES

  • Symbol is Ce
  • Solid at room temperature
  • Black with brown color
  • Atomic weight is 140.116

CERIUM HISTORY

  • Wihelm Von Hisinger, Jöns Berzelius, and Martin Klaprothin
  • 1803
  • At Sweden, Germany
Photo by Werner Kunz

CERIUM USES

  • Cerium makes flints for lighters, a component of self cleaning ovens, and incandescent lantern mantles.
Photo by sffubs

THALLIUM

  • The element symbol is Tl
  • Solid at room temperature
  • The color is silvery white
  • Extremely toxic

THALLIUM HISTORY

  • Discovered spectroscopicly by Crookes and Lamy
  • 1861
  • Discovered in England

THALLIUM USES

  • Thallium is used in infrared optic materials, electronics in photoresistors, and in the medical field to help with stress.
Photo by jenny downing

FRANCIUM PROPERTIES

  • The element symbol is Fr
  • A solid at room temperature
  • A metallic color

FRANCIUM HISTORY

  • Marguerite Perey
  • 1939
  • Curie Institute in Paris, France
Photo by TaylorMiles

FRANCIUM USES

  • Due to the small amounts produced, there are job uses for Francium outside of basic scientific research.
Photo by Hobo Matt