Tc
Technetium
উপাদান 43 · 98.0 u
Technetium was the first artificially produced element and has no stable isotopes.
Physical Properties
| পদাৰ্থ | 98.0 u |
| ঘনত্ব | 11.5 g/cm³ |
| Melting Point | 2430.0 K |
| উত্তাপৰ বিন্দু | 4538.0 K |
| আকৃতি | Shiny gray metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.9 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 702.0 kJ/mol |
| ইলেকট্ৰন | 53.0 kJ/mol |
| Oxidation States | +1, +2, +3, +4, +5, +6, +7 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Kr] 4d5 5s2 |
| পৰমাণু | 136.0 pm |
| কোভালেন্ট বেৰিয়াড | 147.0 pm |
| Van der Waals Radius | 209.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Carlo Perrier, Emilio Segre |
| আবিষ্কাৰৰ বছৰ | 1937 |
| অৱস্থান | Palermo, Italy |
| Named After | Greek 'technetos' meaning artificial |
বিষয়ে Technetium
Technetium is a silvery-gray radioactive metal. It was the first element produced artificially, by bombarding molybdenum with deuterons. Technetium-99m is the most widely used isotope in medical diagnostic imaging.
Uses & Applications
Medical imaging (Tc-99m in SPECT scans), nuclear medicine diagnostics, and steel corrosion inhibitor.
মজা কথা
Technetium was the first artificially created element, and tiny traces have been found in nature from spontaneous uranium fission.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 97 | - | 4.21 million years | No |
| 98 | - | 4.2 million years | No |
| 99 | - | 211,100 years | No |
ইলেকট্ৰন
[Kr] 4d5 5s2