H
Hydrogen is the lightest and most abundant element in the universe, making up about 75% of all normal matter by mass.
Physical Properties
| পদাৰ্থ | 1.008 u |
| ঘনত্ব | 0.00008988 g/cm³ |
| Melting Point | 14.01 K |
| উত্তাপৰ বিন্দু | 20.28 K |
| আকৃতি | Colorless gas |
| State at Room Temp | Gas |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 2.2 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 1312.0 kJ/mol |
| ইলেকট্ৰন | 72.8 kJ/mol |
| Oxidation States | -1, +1 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | 1s1 |
| পৰমাণু | 25.0 pm |
| কোভালেন্ট বেৰিয়াড | 31.0 pm |
| Van der Waals Radius | 120.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Henry Cavendish |
| আবিষ্কাৰৰ বছৰ | 1766 |
| অৱস্থান | London, England |
| Named After | Greek 'hydro' and 'genes' meaning water-forming |
বিষয়ে Hydrogen
Hydrogen is a colorless, odorless, tasteless, and highly flammable gas. It is the simplest element with just one proton and one electron. Stars like our Sun are primarily powered by hydrogen fusion reactions. On Earth, hydrogen is mostly found combined with oxygen in water.
Uses & Applications
Rocket fuel, petroleum refining, ammonia production, fuel cells, welding, and as a potential clean energy carrier.
মজা কথা
Hydrogen is the only element whose isotopes have individual names: protium, deuterium, and tritium.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 1 | 0.999885% | - | Yes |
| 2 | 0.000115% | - | Yes |
| 3 | - | 12.32 years | No |
ইলেকট্ৰন
1s1