As
Arsenic is a notorious metalloid historically known as the 'king of poisons'.
Physical Properties
| পদাৰ্থ | 74.922 u |
| ঘনত্ব | 5.776 g/cm³ |
| Melting Point | 1090.0 K |
| উত্তাপৰ বিন্দু | 887.0 K |
| আকৃতি | Metallic gray |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 2.18 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 947.0 kJ/mol |
| ইলেকট্ৰন | 78.2 kJ/mol |
| Oxidation States | -3, +2, +3, +5 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Ar] 3d10 4s2 4p3 |
| পৰমাণু | 114.0 pm |
| কোভালেন্ট বেৰিয়াড | 119.0 pm |
| Van der Waals Radius | 185.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Albertus Magnus |
| আবিষ্কাৰৰ বছৰ | 1250 |
| অৱস্থান | Germany |
| Named After | Greek 'arsenikon' meaning yellow orpiment |
বিষয়ে Arsenic
Arsenic occurs in many minerals and as a steel-gray, brittle solid. It sublimes rather than melting at standard pressure. Despite its toxicity, arsenic trioxide treats acute promyelocytic leukemia.
Uses & Applications
Semiconductors (gallium arsenide), wood preservatives, pesticides, lead alloys, and cancer treatment.
মজা কথা
Arsenic was the 'king of poisons' and 'poison of kings' -- a favored murder weapon in the Middle Ages because it was undetectable.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 75 | 1.0% | - | Yes |
ইলেকট্ৰন
[Ar] 3d10 4s2 4p3