Rhodium is a chemical element; it has symbol Rh and atomic number 45. It is a very rare, silvery-white, hard, corrosion-resistant transition metal. It is a noble metal and a member of the platinum group. It has only one naturally occurring isotope, which is 103 Rh.

2023年9月29日 · Discovered in the early 1800s from a chunk of smuggled platinum ore, rhodium is the most valuable precious metal on the planet today, used mainly for keeping car emissions in check. Mobile Menu HowStuffWorks

2025年2月28日 · rhodium (Rh), chemical element, one of the platinum metals of Groups 8–10 (VIIIb), Periods 5 and 6, of the periodic table, predominantly used as an alloying agent to harden platinum. Rhodium is a precious, silver-white metal, with a high reflectivity for light.

المظهر رمادي فلزي: الخواص العامة الاسم، العدد، الرمز: روديوم، 45، Rh تصنيف العنصر: فلز انتقالي: المجموعة، الدورة، المستوى الفرعي: 9، 5، d: الكتلة الذرية

2018年3月13日 · Rhodium is a silver-white metallic element that is highly reflective and resistant to corrosion. It is considered the rarest and most valuable precious metal in the world — well above gold or ...

Discover the in-depth guide to Rhodium, a rare and valuable element in the platinum group. Learn about its physical and chemical properties, its critical role in reducing automobile emissions, applications in the medical field, and its everyday uses.

2020年9月16日 · Rhodium is a very special metal in terms of its performance in converting NOx into harmless gases, and will continue to be the metal of choice for the control of NOx. Rhodium is used in other industries to a far lesser extent: a catalyst for producing nitric and acetic acids in the chemical industry

2023年8月17日 · Do you know what rhodium is or how it differs from platinum? Here we compare Rhodium’s properties such as melting point, density, and harness to platinum.

Rhodium is extremely rare metal and is present in around 0.0002 parts per million of the earth’s crust. The minerals and ores of rhodium are not very common in the earth’s crust. Rhodium is found in free form in nature, as well as alloyed with gold and other metals of the platinum group.

Rhodium. Rhodium is a chemical element with symbol Rh and atomic number 45. Classified as a transition metal, Rhodium is a solid at room temperature.