Dysprosim

 Dysprosium

Sources :
 * Name of the element and how it got its name:Dysprosium.It got its name from the Greek word ** 'dysprositos' meaning hard to get at. **
 * Who discovered it ? Lecoq de Boisbaudran
 * When was it discovered ? 1886
 * Symbol: Dy
 * Atomic number:66
 * Atomic mass:162.50
 * Source/origin of the symbol: From the Greek word //dysprositos// (hard to get at)
 * Number of protons:66
 * Neutrons: 96.50
 * Electrons:96.50
 * Where it is found (air, water, land): From in many minerals.The most important ores(minerals that have been mined) are monazite and bastnasite.
 * In what form (state of matter-solid,liquid,gas):Solid
 * Physical facts:Dysprosium is a bright silver. Because its a salt it is greenish yellow.Its stable at room temperature but ﻿in moist air it tarnishes.
 * Melting point:1413 °C
 * Boiling point:2567 °C
 * Density:293 K:8.536 g/cm3
 * Abundance in the Earth crust ( crust includes air,water, and land)
 * Uses (how is the element used):Metallurgy. Its used in lasers when mixed with other elements.Used when doing chemical reactions, and is in CD disks.
 * Interesting facts:Most of Dysprosium is mostly mined from clay ores in Southern China. When it delutes with mineral acids,hydrogen is emitted.
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