Zirconium


 * Element name**: Zirconium


 * Element symbol**: Zr


 * Atomic mass**: 91[[image:zirconium_nylah.png width="216" height="288" align="right"]][[image:ziconuim.gif width="288" height="216" align="right"]]


 * Atomic number**: 40


 * Protons**: 40


 * Electrons**: 40

in berlin Germany.
 * Discovery who and when**: discovered by Heinrich Klaproth in 1789

Gemstone.
 * How was it named**: It was originated from the Arabic "zargon" the color of a


 * State of matter**: Solid


 * Melting point**: ­1855°C


 * Boiling point**: 4409°C


 * Characteristics**:
 * 1) Soft and Ductile.
 * 2) Malleable metal at room temperature.
 * 3) Grayish white lustrous metal.

Uses of elements: vacum tubes, surgical appliances, photo flash bulbs, Lamp filaments and etc.

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 * Interesting facts**:
 * Has been identified in the sun and meteorites.
 * Becomes magnetic at temperatures below 35°k.