Al
Aluminum is the most abundant metal in Earth's crust and one of the most widely used metals.
Physical Properties
| পদাৰ্থ | 26.982 u |
| ঘনত্ব | 2.698 g/cm³ |
| Melting Point | 933.47 K |
| উত্তাপৰ বিন্দু | 2792.0 K |
| আকৃতি | Silvery-white, soft metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.61 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 577.5 kJ/mol |
| ইলেকট্ৰন | 41.8 kJ/mol |
| Oxidation States | +1, +3 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Ne] 3s2 3p1 |
| পৰমাণু | 143.0 pm |
| কোভালেন্ট বেৰিয়াড | 121.0 pm |
| Van der Waals Radius | 184.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Hans Christian Oersted |
| আবিষ্কাৰৰ বছৰ | 1825 |
| অৱস্থান | Copenhagen, Denmark |
| Named After | Latin 'alumen' meaning alum |
বিষয়ে Aluminum
Aluminum is a silvery-white, lightweight, ductile metal. It comprises about 8% of Earth's crust by mass. Before the Hall-Heroult process, aluminum was more precious than gold. The process made aluminum affordable and launched the modern aluminum industry.
Uses & Applications
Beverage cans, aircraft construction, window frames, kitchen foil, electrical transmission lines, and vehicle parts.
মজা কথা
Before 1886, aluminum was more expensive than gold. Napoleon III served honored guests with aluminum cutlery while lesser guests used gold.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 27 | 1.0% | - | Yes |
ইলেকট্ৰন
[Ne] 3s2 3p1