Tuesday, August 24, 2004

Dysprosium

(Dy), chemical element, rare-earth metal of transition Group IIIb of the periodic table. A relatively hard and very reactive metal, it is oxidized by air and by water. Its high melting point and ability to absorb neutrons make it useful in control rods for nuclear reactors. Its compounds have been used for making laser materials, as components in some electronic equipment,

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