Lu
Lutetium is the last and heaviest lanthanide element.
Physical Properties
| পদাৰ্থ | 174.97 u |
| ঘনত্ব | 9.84 g/cm³ |
| Melting Point | 1925.0 K |
| উত্তাপৰ বিন্দু | 3675.0 K |
| আকৃতি | Silvery-white metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.27 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 523.5 kJ/mol |
| ইলেকট্ৰন | 33.4 kJ/mol |
| Oxidation States | +3 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Xe] 4f14 5d1 6s2 |
| পৰমাণু | 174.0 pm |
| কোভালেন্ট বেৰিয়াড | 187.0 pm |
| Van der Waals Radius | 221.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Georges Urbain, Carl Auer von Welsbach |
| আবিষ্কাৰৰ বছৰ | 1907 |
| অৱস্থান | Paris, France / Vienna, Austria |
| Named After | Latin 'Lutetia' meaning Paris |
বিষয়ে Lutetium
Lutetium is the hardest and densest of the lanthanides. It is very expensive due to the difficulty of separation. Lutetium-176 is used for radiometric dating.
Uses & Applications
PET scan detectors, catalysts, LED phosphors, and radiometric dating.
মজা কথা
Lutetium is the most expensive naturally occurring rare earth element due to extreme difficulty of separation.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 175 | 0.9741% | - | Yes |
| 176 | 0.0259% | 37.6 billion years | No |
ইলেকট্ৰন
[Xe] 4f14 5d1 6s2