Element Data Atomic Symbol: Hf Atomic Number: 72 Atomic Weight: 178.49 g/mol Isotopes and Abundances: 174 Hf 0.16% , 176 Hf 5.26% , 177 Hf 18.60% , 178 Hf 27.28% , 179 Hf 13.62% , 180 Hf 35.08% 1 Atm Melting Point: 2233 掳C 1 Atm Boiling Point: 4603 掳C Common Valences: 4...
(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...
–Atomic Radius (Å) 2.23 –Covalent Radius (Å) 1.64 Electron Affinity 1.351 Electronegativity 1.3 Ionization Energy 1st 2nd 3rd 4th 658.519 1447 2248.1 3215.86 Hafnium Bohr Model What is Hafnium Used for A good absorber of neutrons, Hf applies to making control rods of nuclear reactors such...
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...
As the first element in the third series of the transition elements, hafnium’s atomic number(72Hf ) follows the lanthanide series of rare-earths. The lanthanide series is separated out ofthe normal position of sequenced atomic numbers and is placed below the third series on theperiodic table ...
▾ 英语-中文正在建设中 例子: 使用DeepL翻译器,即刻翻译文本和文档 随打随译 世界领先的质量 拖放文件 立刻翻译 ▾ 维基百科 Hafnium: Hafnium is a chemical element with the symbol Hf and atomic number 72. A lustrous, silvery gray, tetravalent transition metal, hafnium chemically resembles zirconium...
Hafnium Atomic Data Element Name:Hafnium Hafnium Symbol:Hf Atomic Number:72 Atomic Weight:178.49 Element Classification:Transition Metal Electron Configuration:[Xe] 4f145d26s2 Discovery:Dirk Coster and Georg von Hevesy 1923 (Denmark) Name Origin:Hafnia, the Latin name of Copenhagen ...
Hafnium Atomic Data Element Name:Hafnium Hafnium Symbol:Hf Atomic Number:72 Atomic Weight:178.49 Element Classification:Transition Metal Electron Configuration:[Xe] 4f145d26s2 Discovery:Dirk Coster and Georg von Hevesy 1923 (Denmark) Name Origin:Hafnia, the Latin name of Copenhagen ...