holmium by micah 2hof 3 + 3ca → 2ho + 3caf 2
TRANSCRIPT
- Slide 1
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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