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Beryllium is a lightweight, strong, and toxic alkaline earth metal.
Physical Properties
| পদাৰ্থ | 9.0122 u |
| ঘনত্ব | 1.85 g/cm³ |
| Melting Point | 1560.0 K |
| উত্তাপৰ বিন্দু | 2742.0 K |
| আকৃতি | White-gray metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 1.57 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 899.5 kJ/mol |
| ইলেকট্ৰন | -48.0 kJ/mol |
| Oxidation States | +1, +2 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [He] 2s2 |
| পৰমাণু | 112.0 pm |
| কোভালেন্ট বেৰিয়াড | 96.0 pm |
| Van der Waals Radius | 153.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Louis Nicolas Vauquelin |
| আবিষ্কাৰৰ বছৰ | 1798 |
| অৱস্থান | Paris, France |
| Named After | Greek 'beryllos' meaning beryl mineral |
বিষয়ে Beryllium
Beryllium is a relatively rare element occurring as a product of the spallation of larger nuclei. It is a hard, steel-gray metal that is remarkably stiff and lightweight. Beryllium is transparent to X-rays and is used in X-ray windows. Its compounds are toxic and can cause berylliosis.
Uses & Applications
Aerospace materials, X-ray windows, nuclear reactors, springs, and non-sparking tools for use around flammable gases.
মজা কথা
Beryllium is transparent to X-rays, making it ideal for X-ray tube windows, and it was originally called 'glucinium' because its compounds taste sweet (though they are toxic).
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 7 | - | 53.22 days | No |
| 9 | 1.0% | - | Yes |
| 10 | - | 1.39 million years | No |
ইলেকট্ৰন
[He] 2s2