All About - Hafnium (Extended)

• published: 01 Mar 2015
• views: 2

What is Hafnium? A documentary report all about Hafnium for the blind and visually impaired or for homework/assignment. Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though hafnium was not identified until 1923, making it the penultimate stable isotope element to be discovered (rhenium was identified two years later). Hafnium is named after Hafnia, the Latin name for Copenhagen, where it was discovered. Intro/Outro music: Discovery Hit/Chucky the Construction Worker - Kevin MacLeod (incompetech.com) Licensed under CC-BY-3.0 Text derived from: http://en.wikipedia.org/wiki/Hafnium Text to Speech powered by tts-api.com Images are Public Domain or CC-BY-3.0: Hafnium_bits.jpg from http://en.wikipedia.org/wiki/Hafnium Hafnium_(72_Hf).jpg from http://commons.wikimedia.org/wiki/File:Hafnium_(72_Hf).jpg Hafnium_ebeam_remelted.jpg from http://en.wikipedia.org/wiki/Hafnium Hafnium_lump_thin_film_effects.jpg from http://commons.wikimedia.org/wiki/File:Hafnium_lump_thin_film_effects.jpg 220px-Hafnium(IV)_oxide.jpg from http://en.wikipedia.org/wiki/Hafnium Electron_shell_072_hafnium.png from http://commons.wikimedia.org/wiki/File:Electron_shell_072_hafnium.png 1280px-Hafnium_bits.jpg from http://commons.wikimedia.org/wiki/File:Hafnium_bits.jpg 2000px-Electron_shell_072_Hafnium_-_no_label.svg.png from http://sco.wikipedia.org/wiki/Hafnium Hafnium_pellets_with_a_thin_oxide_layer.jpg from http://en.wikipedia.org/wiki/File:Hafnium_pellets_with_a_thin_oxide_layer.jpg