Saturday, February 16, 2013



  • Actinium is a radioactive chemical element with atomic number is 89 and it symbol Ac.
  • The chemical behaviour of actinium is similar to that of the rare earths, particularly lanthanum.
  • Although actinium is present in the earth's crust and it is found in only trace amounts. It is one of the ten rarest elements.
  • Actinium glows in the dark as it is so highly radioactive. The glow emitted by actinium is bluish in color.

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