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 1922, by Dirk Coster and George de Hevesy.

Hafnium, chemical element, metal of Group 4 (IVb) of the periodic table. It is a ductile metal with a brilliant silvery luster. It is dispersed in Earth’s crust to the extent of three parts per million and is invariably found in zirconium minerals up to a few percent compared with zirconium.

Hafnium is a greyish-silver lustrous metal. It is a transition metal and resembles zirconium in its chemical properties, as both have equal number of valence electrons. It is ductile and is resistant to corrosion. Hafnium is denser than zirconium. Hafnium is resistant to …

2018年3月31日 · Hafnium is a lustrous, silvery-gray transition metal. Discovered in 1923, it was the next-to-last element with stable nuclei to be added to the periodic table (the final one was rhenium in...

Hafnium produces a protective film of nitride or oxide on exposed surfaces, making the element highly resistant to corrosion. The element can form alloys with iron, tantalum, titanium, and other transition metals. Hafnium ignites spontaneously in powder form, similar to zirconium.

Hafnium is a chemical element with symbol Hf and atomic number 72. Classified as a transition metal, Hafnium is a solid at room temperature. J.C. Slater, J Chem Phys, 1964, 41 (10), 3199-3205. DOI:10.1063/1.1725697.

Element Hafnium (Hf), Group 4, Atomic Number 72, d-block, Mass 178.486. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.

2025年2月1日 · Hafnium is a shiny, silvery-gray metal that is ductile and resistant to corrosion. It has two allotropes: α-Hafnium: Hexagonal close-packed (hcp) structure, stable at room temperature. β-Hafnium: Body-centered cubic (bcc) structure, stable at high temperatures. Hafnium vs Zirconium

2023年12月28日 · 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]. It is extracted from zircon ores whose major sources are heavy mineral sand ore deposits found in the USA, Malawi, Australia, and Brazil.

A comprehensive guide to Hafnium, exploring its history, properties, and wide range of applications. Learn how this unique element plays a crucial role in industries like nuclear energy, aerospace, and semiconductors, as well as its potential medical applications.