1 / 5

Hafnium!! By: Kyndal Brizendine

Hafnium!! By: Kyndal Brizendine. USES Hafnium is used for reactor control rods Hafnium carbide is perhaps the most refractory binary composition Hafnium is used in incandescent and gas lamps. Properties boiling point of 4602°C Hafnium has a melting point of 20 °C

konala
Download Presentation

Hafnium!! By: Kyndal Brizendine

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hafnium!!By: Kyndal Brizendine

  2. USES Hafnium is used for reactor control rods Hafnium carbide is perhaps the most refractory binary composition Hafnium is used in incandescent and gas lamps Properties boiling point of 4602°C Hafnium has a melting point of 20°C has a brilliant silver luster. Specific Heat: 0.14J/gK Uses/ Properties of Hafnium!! 72 Hf 178.49

  3. Atomic Number: 72  Symbol: Hf Atomic Weight: 178.49  Discovery Coster & von  Hevesy 1923. Based on the Bohr theory, it was expected that hafnium would be associated with zirconium. Ultimately, the element was identified in zircon from Norway using x-ray spectroscopy.  Sources Most zirconium minerals contain 1-5% hafnium. Originally, hafnium was separated from zirconium using repeated recrystallization of double ammonium or potassium fluorides. van Arkel and deBoer prepared metallic hafnium by passing the tetraiodide vapor over a heated tungsten filament. Now hafnium is generally prepared by the Kroll process of reducing the tetrachloride with magnesium or sodium. FACTS about Hafnium!!

  4. boiling point of 4602°C was expected that hafnium would be associated with zirconium has a brilliant silver luster Based on the Bohr theory Properties Discovery Specific Heat: 0.14J/gK Hafnium Atomic Weight:  178.49  Coster & von Hevesy 1923. Quick Facts Symbol: Hf

  5. Sources • http://www.webelements.com/webelements/scholar/elements/periodic-table/uses.html • http://www.chemsoc.org/viselements/pages/pertable.com • http://www.environmentalchemistry.com/yogi/periodic/Hf.com

More Related