Αποτελέσματα Αναζήτησης
9 Νοε 2023 · These ready-to-use worksheets are perfect for teaching kids about Platinum. Platinum is a dense, lustrous, and precious metal known for its remarkable corrosion resistance, making it highly valued for various industrial and jewelry applications.
28 Απρ 2021 · The platinum group metals or PGMs are a cluster of six transition metals on the periodic table. They are noble and precious metals with chemical and physical properties similar to that of platinum and occurring in the same ore deposits. The platinum group metals are rare, durable, useful, and highly valuable.
- Platinum is a precious, silver-white metal, renowned for its rarity and high market value. - Known for its versatility, it is used in various industries, from automotive to healthcare. - As a transition metal, it’s dense, malleable, and impervious to corrosion, existing as a solid under standard conditions. Historical Background.
Element Platinum (Pt), Group 10, Atomic Number 78, d-block, Mass 195.084. Sources, facts, uses, scarcity (SRI), podcasts, alchemical symbols, videos and images.
17 Μαΐ 2022 · Physical and chemical properties. Physically, platinum is heavy, soft, malleable (easy to work—only silver and gold are easier to shape), and ductile (easy to draw into wires) and has a fairly high melting point (~1770°C or 3220°F). Chemically, it's often described as a noble metal because it is so unreactive.
21 Αυγ 2020 · Platinum metal has a number of useful properties, which explains its application in a wide range of industries. It is one of the densest metal elements—almost twice as dense as lead—and very stable, giving the metal excellent corrosion resistant properties.
Occurrence. Platinum is a rare transition metal. It is present in a concentration of as low as around 0.005 ppm (5micrograms per kg) in the Earth’s crust. Platinum is mostly present in its native form and as alloy with iron. It is primarily prevalent in the alluvial deposit layer along with sand and clay particles.