Chemistry
Published on Nov 27, 2015
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PRESENTATION OUTLINE
ACTINIUM
- Atomic number: 89
- Atomic weight: 227
- Electronegativity: 1.9
- It is a solid.
- It is a metal.
INFORMATION
- Discovered in 1899.
- Founded by Andre Debieme from france.
- Named by the greek word meaning ray.
- Is known as a "rare-earth element".
EXTRA INFO
- Reacts in water to produce hydrogen gas.
- It also reacts too acids and air.
- Actinium does not react to bases.
- Chemical group - actinides.
LOOKS LIKE
- It is a soft, silvery-white, radioactive metal.
- It glows in the dark.
COOL FACTS
- Glows in the dark because its intense radioactivity excites the surrounding air.
- Melts at 1050°c but is not flammable.
- Very powerful source of alpha rays.
- Actinium is part of decay series of uranium.
