In
Indium is a soft, malleable post-transition metal used in touchscreen displays.
Physical Properties
| পদাৰ্থ | 114.82 u |
| ঘনত্ব | 7.31 g/cm³ |
| Melting Point | 429.75 K |
| উত্তাপৰ বিন্দু | 2345.0 K |
| আকৃতি | Silvery-white lustrous metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.78 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 558.3 kJ/mol |
| ইলেকট্ৰন | 28.9 kJ/mol |
| Oxidation States | +1, +2, +3 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Kr] 4d10 5s2 5p1 |
| পৰমাণু | 167.0 pm |
| কোভালেন্ট বেৰিয়াড | 142.0 pm |
| Van der Waals Radius | 193.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Ferdinand Reich, Hieronymous Theodor Richter |
| আবিষ্কাৰৰ বছৰ | 1863 |
| অৱস্থান | Freiberg, Germany |
| Named After | Latin 'indicum' meaning indigo, from its spectral line |
বিষয়ে Indium
Indium is very soft, silvery-white, and brilliant. It can be cut with a knife and leaves a streak on paper. It was discovered by its bright indigo spectral line.
Uses & Applications
Touchscreen displays (indium tin oxide), solders, semiconductors, and low-melting-point alloys.
মজা কথা
When you bend indium, it makes a characteristic 'tin cry' -- a high-pitched crackling sound as the crystal structure deforms.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 113 | 0.0429% | - | Yes |
| 115 | 0.9571% | 4.41e14 years | No |
ইলেকট্ৰন
[Kr] 4d10 5s2 5p1