I
Iodine is an essential trace element required for thyroid hormone production.
Physical Properties
| পদাৰ্থ | 126.9 u |
| ঘনত্ব | 4.93 g/cm³ |
| Melting Point | 386.85 K |
| উত্তাপৰ বিন্দু | 457.4 K |
| আকৃতি | Lustrous metallic gray solid, violet gas |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 2.66 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 1008.4 kJ/mol |
| ইলেকট্ৰন | 295.2 kJ/mol |
| Oxidation States | -1, +1, +3, +5, +7 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Kr] 4d10 5s2 5p5 |
| পৰমাণু | 115.0 pm |
| কোভালেন্ট বেৰিয়াড | 139.0 pm |
| Van der Waals Radius | 198.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Bernard Courtois |
| আবিষ্কাৰৰ বছৰ | 1811 |
| অৱস্থান | Paris, France |
| Named After | Greek 'iodes' meaning violet |
বিষয়ে Iodine
Iodine is a shiny, purple-black nonmetal that sublimes to a violet gas. It is the heaviest essential element commonly needed by living organisms. Iodine deficiency is the leading preventable cause of intellectual disabilities worldwide.
Uses & Applications
Iodized salt, medical disinfectants, X-ray contrast media, LCD polarizing filters, and pharmaceuticals.
মজা কথা
Iodized salt has prevented millions of cases of intellectual disability -- one of the most successful public health interventions in history.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 127 | 1.0% | - | Yes |
ইলেকট্ৰন
[Kr] 4d10 5s2 5p5