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HOLMIUM By Micah 2HoF 3 + 3Ca 2Ho + 3CaF 2 http://www.webelements.com/

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physical properties

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crystalline structure Structure: hexagonal close- packed (hcp) Space group: P63/mmc Space group number: 194 Structure: hexagonal close- packed (hcp) Space group: P63/mmc Space group number: 194

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Facts Atomic number: 67 Symbol: Ho Atomic Weight: 164.93032 Number of Protons:67 Number of electrons:67 Number of Neutrons: 98 Atomic number: 67 Symbol: Ho Atomic Weight: 164.93032 Number of Protons:67 Number of electrons:67 Number of Neutrons: 98

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More facts Block: F Period: 6 Group: Lanthanoid Electronic Configuration:[Xe] 4f11 6s2 aka [Xe]6s 2 4f 11 Block: F Period: 6 Group: Lanthanoid Electronic Configuration:[Xe] 4f11 6s2 aka [Xe]6s 2 4f 11

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Uses of Holmium: Used in filters that help calibrate the wavelength settings in UV spectrophotomet- ers Used to color red or yellow glass Used in some jewelry

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More uses Used in some solid state lasers Used in the calibration of gamma ray spectrometers Used in microwaves, and also dental/ medical settings Used in some solid state lasers Used in the calibration of gamma ray spectrometers Used in microwaves, and also dental/ medical settings

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Where do you find holmium? In the element Monazite In the element Gadolinite **Note: Holmium is very rarely found in nature, and when it is, it is in small quantity.

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Chemical Properties: Stable at room temperature Dissolves in acids Oxidation State: +3 Stable at room temperature Dissolves in acids Oxidation State: +3

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Fun Facts: The word holmium comes from the Latin word Holmia, which means Stockholm. Stockholm is the hometown of the founder of holmium. It costs $10 for a single gram of holmium! http://www.youtube.com/watch?v=3ERc- vPLMUs http://www.youtube.com/watch?v=3ERc- vPLMUs http://www.youtube.com/watch?v=Klfui3 WSQ00 http://www.youtube.com/watch?v=Klfui3 WSQ00 The word holmium comes from the Latin word Holmia, which means Stockholm. Stockholm is the hometown of the founder of holmium. It costs $10 for a single gram of holmium! http://www.youtube.com/watch?v=3ERc- vPLMUs http://www.youtube.com/watch?v=3ERc- vPLMUs http://www.youtube.com/watch?v=Klfui3 WSQ00 http://www.youtube.com/watch?v=Klfui3 WSQ00