K
Potassium is an essential alkali metal vital for nerve and muscle function.
Physical Properties
| পদাৰ্থ | 39.098 u |
| ঘনত্ব | 0.862 g/cm³ |
| Melting Point | 336.53 K |
| উত্তাপৰ বিন্দু | 1032.0 K |
| আকৃতি | Silvery-white metallic |
| State at Room Temp | Solid |
রাসায়নিক বৈশিষ্ট্যসমূহ
| ইলেকট্ৰোনেজেটিভিটি | 0.82 (Pauling) |
| 1- তম আইনাইজেশন শক্তি | 418.8 kJ/mol |
| ইলেকট্ৰন | 48.4 kJ/mol |
| Oxidation States | +1 |
প্ৰমাণপত্ৰৰ বৈশিষ্ট্য
| ইলেকট্ৰন | [Ar] 4s1 |
| পৰমাণু | 227.0 pm |
| কোভালেন্ট বেৰিয়াড | 203.0 pm |
| Van der Waals Radius | 275.0 pm |
ডিস্কভাৰী
| আবিষ্কাৰ কৰা হৈছে | Humphry Davy |
| আবিষ্কাৰৰ বছৰ | 1807 |
| অৱস্থান | London, England |
| Named After | English 'potash'; symbol K from Latin 'kalium' |
বিষয়ে Potassium
Potassium is a soft, silvery-white metal that reacts vigorously with water. It is essential for all living cells, playing a critical role in nerve transmission, muscle contraction, and fluid balance. It was the first metal isolated by electrolysis.
Uses & Applications
Fertilizers (potash), soap, gunpowder, glass manufacturing, food preservation, and medical IV fluids.
মজা কথা
Bananas are famously associated with potassium, but avocados and spinach actually contain more per serving.
আইসোটোপ
| Mass Number | অভাৱ | হাফ-লাইফ | Stable |
| 39 | 0.932581% | - | Yes |
| 40 | 0.000117% | 1.248 billion years | No |
| 41 | 0.067302% | - | Yes |
ইলেকট্ৰন
[Ar] 4s1