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. en.wikipedia.org en.wikipedia.org 铪: ...
(Elements & Compounds) a bright metallic element found in zirconium ores: used in tungsten filaments and as a neutron absorber in nuclear reactors. Symbol: Hf; atomic no: 72; atomic wt: 178.49; valency: 4; relative density: 13.31; melting pt: 2231±20°C; boiling pt: 4603°C ...
Hafnium is a chemical element; it has symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium and is found in many zirconium minerals. Its existence was predicted by Dmitri Mendeleev in 1869, though it was not identified until...
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. Hafnium was the penultimate stable isotope...
It does not appreciably react with large quantities of water.|Hafnium atom is a titanium group element atom.|A metal element of atomic number 72 and atomic weight 178.49, symbol Hf. Hafnium Basic Attributes Molecular Weight: 178.49 Exact Mass: 179.946503 EC Number: 231-166-4 UNII: X7...
haefnim hafnium英英释义 noun a chemical element that has seventy-two protons in each nucleus and that occurs as a tetravalent metal often found in combination with zirconium, used in pure form for applications such as nuclear reactor control rods because it absorbs neutrons well. (symbol: Hf) ...
Hafnium (pronounced as HAF-nee-uhm) belongs to the family of transition metals, denoted by the chemical symbol Hf. It has thirty-two isotopes with known half-lives, of which only six exist naturally [1, 2]. Hafnium Symbol Where is the Element Found It is extracted from zircon ores whose...
hafnium noun haf·ni·umˈhaf-nē-əm : Chemical Elements Table Examples ofhafniumin a Sentence Recent Examples on the Web These examples are automatically compiled from online sources to illustrate current usage.Opinions expressed in the examples do not represent those of Merriam-Webster...
Visit ChemicalBook To find more HAFNIUM(7440-58-6) information like chemical properties,Structure,melting point,boiling point,density,molecular formula,molecular weight, physical properties,toxicity information,customs codes. You can also browse global s
(symbolHf) aradioactivechemical element.Hafniumis a hard silver-grey metal. Word Origin Join us Join our community to access the latest language learning and assessment tips from Oxford University Press! Seehafniumin the Oxford Advanced American Dictionary ...