Rh
Rhodium is one of the rarest and most expensive precious metals, prized for its reflectivity.
Physical Properties
| পদাৰ্থ | 102.91 u |
| ঘনত্ব | 12.41 g/cm³ |
| Melting Point | 2237.0 K |
| উত্তাপৰ বিন্দু | 3968.0 K |
| আকৃতি | Silvery-white metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 2.28 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 719.7 kJ/mol |
| ইলেকট্ৰন | 109.7 kJ/mol |
| Oxidation States | +1, +2, +3, +4, +5, +6 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Kr] 4d8 5s1 |
| পৰমাণু | 134.0 pm |
| কোভালেন্ট বেৰিয়াড | 142.0 pm |
| Van der Waals Radius | 195.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | William Hyde Wollaston |
| আবিষ্কাৰৰ বছৰ | 1803 |
| অৱস্থান | London, England |
| Named After | Greek 'rhodon' meaning rose, from the color of its salts |
বিষয়ে Rhodium
Rhodium is ultra-rare, silvery-white, hard, and corrosion-resistant. It has the highest reflectance of any metal and is one of the most expensive metals in the world.
Uses & Applications
Catalytic converters, jewelry plating, laboratory crucibles, and optical instruments.
মজা কথা
About 80% of the world's rhodium is used in catalytic converters, and it is often more expensive than gold or platinum.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 103 | 1.0% | - | Yes |
ইলেকট্ৰন
[Kr] 4d8 5s1