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1. Hafnium: Hafnium is a chemical element, having the chemical symbol Hf. Its atomic number (the number of protons) is 72. [100%] 2022-06-24
2. Hafnium: 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. [100%] 2023-11-15 [Hafnium] [Chemical elements]...
3. Hafnium: Hafnium (chemical symbol Hf, atomic number 72) is a lustrous, silvery gray metal. Chemically, it resembles zirconium and is found in zirconium minerals. It is used in tungsten alloys in filaments and electrodes and also acts as a neutron absorber ... [100%] 2023-02-04
4. Hafnium: Hafnium is considered to be non-toxic. When in powder form it is pyrophoric (which means, it can spontaneously ignite). [100%] 2023-03-20 [Elements] [Metals]...
5. Hafnium: Hafnium is 'n chemiese element in die periodieke tabel met die simbool Hf en atoomgetal 72. Hafnium is genoem ná die Latynse naam van Kopenhagen (Hafnia), waar dit ontdek is. [100%] 2023-08-15
6. Hafnium: Le hafnium est l'élément chimique de numéro atomique 72, de symbole Hf. Le hafnium ressemble chimiquement au zirconium et on le trouve dans tous les minerais de zirconium. [100%] 2025-01-22
7. Hafnium nitrate: Hafnium(IV) nitrate is an inorganic compound, a salt of hafnium and nitric acid with the chemical formula Hf(NO3)4. Hafnium nitrate can be prepared by the reaction of hafnium tetrachloride and dinitrogen pentoxide. (Chemistry) [70%] 2023-03-22 [Hafnium compounds] [Nitrates]...
8. Hafnium tetrafluoride: Hafnium tetrafluoride is the inorganic compound with the formula HfF4. It is a white solid. (Chemistry) [70%] 2023-12-19 [Hafnium compounds] [Fluorides]...
9. Hafnium acetylacetonate: Hafnium acetylacetonate, also known as Hf(acac)4, is a coordination compound with formula Hf(C5H7O2)4. This white solid is the main hafnium complex of acetylacetonate. [70%] 2022-09-06 [Hafnium compounds] [Acetylacetonate complexes]...
10. Hafnium dioxide: Hafnium(IV) oxide is the inorganic compound with the formula HfO2. Also known as hafnia, this colourless solid is one of the most common and stable compounds of hafnium. (Chemistry) [70%] 2023-08-13 [Hafnium compounds] [Oxides]...
11. Hafnium carbide: Hafnium carbide (HfC) is a chemical compound of hafnium and carbon. Previously the material was estimated to have a melting point of about 3,900 °C. (Chemistry) [70%] 2023-03-31 [Carbides] [Hafnium compounds]...
12. Hafnium diboride: Hafnium diboride belong to the class of Ultra-high-temperature ceramics, a type of ceramic composed of hafnium and boron. It has a melting temperature of about 3250 °C. (Chemistry) [70%] 2022-05-04 [Hafnium compounds] [Borides]...
13. Hafnium tetrabromide: Hafnium tetrabromide is the inorganic compound with the formula HfBr4. It is the most common bromide of hafnium. (Chemistry) [70%] 2023-10-10 [Bromides] [Hafnium compounds]...
14. Hafnium trifluoromethanesulfonate: Hafnium(IV) triflate or hafnium trifluoromethansulfonate is an inorganic substance with the idealized formula Hf(OSO2CF3)4, also written as Hf(OTf)4. Hafnium triflate is used as an impure mixture as a catalyst. (Chemistry) [70%] 2022-08-02 [Hafnium compounds]
15. Hafnium tetrachloride: Hafnium(IV) chloride is the inorganic compound with the formula HfCl4. This colourless solid is the precursor to most hafnium organometallic compounds. (Chemistry) [70%] 2023-06-26 [Chlorides] [Hafnium compounds]...
16. Hafnium disulfide: Hafnium disulfide is an inorganic compound of hafnium and sulfur. It is a layered dichalcogenide with the chemical formula is HfS2. [70%] 2024-02-20 [Hafnium compounds] [Disulfides]...
17. Hafnium tetrachloride: Hafnium(IV) chloride is the inorganic compound with the formula HfCl4. This colourless solid is the precursor to most hafnium organometallic compounds. [70%] 2024-04-11 [Chlorides] [Hafnium compounds]...
18. Hafnium (group): Hafnium (sometimes styled HAFNIUM; also called Silk Typhoon by Microsoft) is a cyber espionage group, sometimes known as an advanced persistent threat, with alleged ties to the Chinese government. Hafnium is closely connected to APT40. (Group) [70%] 2024-08-28 [Chinese advanced persistent threat groups] [Hacking in the 2020s]...
19. Hafnium compounds: Hafnium compounds are compounds containing the element hafnium (Hf). Due to the lanthanide contraction, the ionic radius of hafnium(IV) (0.78 ångström) is almost the same as that of zirconium(IV) (0.79 angstroms). (Chemistry) [70%] 2025-01-12 [Hafnium] [Hafnium compounds]...
20. Hafnium–tungsten dating: Hafnium–tungsten dating is a geochronological radiometric dating method utilizing the radioactive decay system of hafnium-182 to tungsten-182. The half-life of the system is 8.9±0.1 million years. (Astronomy) [57%] 2022-09-10 [Radiometric dating] [Hafnium]...
21. Hafnium(III) iodide: Hafnium(III) iodide is an inorganic compound of hafnium and iodine with the formula HfI3. It is a black solid. (Chemistry) [57%] 2023-12-12 [Hafnium compounds] [Iodides]...
22. Hafnium(IV) carbide: Hafnium carbide (HfC) is a chemical compound of hafnium and carbon. With a melting point of about 3900 °C it is one of the most refractory binary compounds known. (Chemistry) [57%] 2023-05-11 [Carbides] [Hafnium compounds]...
23. Hafnium(III) iodide: Hafnium(III) iodide is an inorganic compound of hafnium and iodine with the formula Hf I3. It is a black solid. [57%] 2023-11-30 [Hafnium compounds] [Iodides]...
24. Hafnium(IV) silicate: Hafnium silicate is the hafnium(IV) salt of silicic acid with the chemical formula of HfSiO4. Thin films of hafnium silicate and zirconium silicate grown by atomic layer deposition, chemical vapor deposition or MOCVD, can be used as a high ... (Chemistry) [57%] 2022-08-22 [Silicates] [Hafnium compounds]...
25. Hafnium(IV)-oxid: Hafniumdioxid ist eine chemische Verbindung aus den Elementen Hafnium und Sauerstoff. Es gehört zur Stoffklasse der Oxide. [57%] 2023-06-24
26. Hafnium(IV) iodide: Hafnium(IV) iodide is the inorganic compound with the formula HfI4. It is a red-orange, moisture sensitive, sublimable solid that is produced by heating a mixture of hafnium with excess iodine. (Chemistry) [57%] 2023-12-14 [Iodides] [Hafnium compounds]...
27. Isotopes of hafnium: Natural hafnium (72Hf) consists of five stable isotopes (Hf, Hf, Hf, Hf, and Hf) and one very long-lived radioisotope, Hf, with a half-life of 2×10 years. In addition, there are 30 other known radionuclides, the most stable ... (Physics) [57%] 2023-03-06 [Isotopes of hafnium] [Hafnium]...
28. Hafnium(IV) oxide: Hafnium(IV) oxide is the inorganic compound with the formula HfO2. Also known as hafnium dioxide or hafnia, this colourless solid is one of the most common and stable compounds of hafnium. (Chemistry) [57%] 2023-12-08 [Hafnium compounds] [Transition metal oxides]...
29. Hafnium(IV) silicate: Hafnium silicate is the hafnium(IV) salt of silicic acid with the chemical formula of HfSiO4. Thin films of hafnium silicate and zirconium silicate grown by atomic layer deposition, chemical vapor deposition or MOCVD, can be used as a high ... [57%] 2024-12-06 [Silicates] [Hafnium compounds]...
30. Datation lutécium-hafnium: La datation lutécium-hafnium est une méthode de datation radiométrique qui repose sur la radioactivité β de l'isotope Lu vers Hf. La demi-vie de Lu est de 3,86 × 10 ans (la constante de désintégration associée est λ = 1,80 × 10 ... [57%] 2024-12-30