Hafnium

Hf

Hafnium

Hafnium was discovered by Dirk Coster and George Charles von Hevesy. Hafnium was discovered in 1923. It's name mean Copenhagen. Discovered in Denmark.
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Periodic Table

The chemical symbol is Hf. It's atomic number is 72. Hafnium's atomic weight is 178.49.

It is in period 6 and group 4. It is a metal and a solid. It has 72 protons and neutrons and 106 electrons.

Where it is found and Uses

Hafnium is not found as a free element but it is found as a ore alvite. It is used as neclear control rods.

Characteristics

Physical properties

The desity is 13310 kg m^-3 and the boiling piont is 8135 f.

Chemical properties

There are ten isotopes for hafnium. The first ionisation is 530 kj.

Citation

"Hafnium: The Essentials." WebElements Periodic Table»Hafnium»the Essentials. Web. 18 Dec. 2014. <http://www.webelements.com/hafnium/>.

"HAFNIUM (Hf) • Element 72 • Physical Properties/Chemical Properties • Description • Uses/Function • Isotopes • Thermochemistry • Reactions • Electron Configuration and Bonding." HAFNIUM (Hf) • Element 72 • Physical Properties/Chemical Properties • Description • Uses/Function • Isotopes • Thermochemistry • Reactions • Electron Configuration and Bonding. Web. 18 Dec. 2014. <http://www.chemistry-reference.com/q_elements.asp?Symbol=Hf>.

"Chemical Elements.com - Hafnium (Hf)." Chemical Elements.com - Hafnium (Hf). Web. 18 Dec. 2014. <http://www.chemicalelements.com/elements/hf.html>.

"Hafnium." Hafnium. Web. 18 Dec. 2014. <http://tinyjim.tripod.com/ptable/hf.htm>.

"Hafnium: Geological Information." WebElements Periodic Table»Hafnium»geological Information. Web. 18 Dec. 2014. <http://www.webelements.com/hafnium/geology.html>.

"Google." Google. Web. 18 Dec. 2014. <https://www.google.com/webhp?sourceid=chrome-instant&ion=1&espv=2&ie=UTF-8#q=hafnium uses>.

"Hafnium: Physical Properties." WebElements Periodic Table»Hafnium»physical Properties. Web. 18 Dec. 2014. <http://www.webelements.com/hafnium/physics.html>.

"Hafnium - Hf." Hafnium (Hf). Web. 18 Dec. 2014. <http://www.lenntech.com/periodic/elements/hf.htm#Atomic number>.