Hafnium is a rare element with rare applications: - component of control rods for nuclear reactors - component of some alloys - getter in lamps and tubes - electrode for plasma cutters - hafnium dioxide was recently used as an electrical insulator in microprocessors - hafnium carbide has a very great point of melting (the most refractory compound known today) - possible use in weapons (USA)
Hafnium-174 is the most common isotope of hafnium, making up about 31% of naturally occurring hafnium.
Hafnium can react with a variety of elements to form compounds, such as oxygen to form hafnium dioxide (HfO2) or with chlorine to form hafnium tetrachloride (HfCl4). It is generally considered to be unreactive at room temperature but can react with strong acids and alkalis under high temperature conditions.
Hafnium is a dense, ductile metal that is relatively soft compared to other metals, such as steel or titanium. It can be easily machined and formed, but it does have a high melting point and is known for its high resistance to corrosion.
The atomic number of hafnium is 72. So there is 72 protons.
Hafnium typically forms a +4 oxidation state in its compounds, resulting in the formation of Hf^4+ ions. These ions have a charge of +4 and are commonly found in hafnium compounds.
- neutron absorbent in control rods of nuclear reactors - hafnium oxide is used as electrical insulator for microprocessors - hafnium is rarely used as alloying element for very special alloys - the isomer 178m2Hf can be used as a nuclear weapon (emitter of gamma rays) by the United States
Hafnium is malleable.
Hafnium is a shiny, silvery metal that does not have a distinct color.
Pure hafnium doesn't exist in the nature; hafnium form many compounds.
Fine powders of hafnium are pyrophoric.
There are 37 isotopes of Hafnium.
Hafnium-174 is the most common isotope of hafnium, making up about 31% of naturally occurring hafnium.
Hafnium is found in tandem with zirconium deposits. It is separated from the zirconium during refinement as hafnium chloride. It is then reduced with magnesium to produce pure hafnium.
Hafnium is a metal, steel grey appearance.
Hafnium is a single element and therefore nonpolar.
Yes, hafnium is reactive, but not like sodium or potassium.
The density of hafnium is 13,31 g/cm3.