K
Potassium is an essential alkali metal vital for nerve and muscle function.
Fisiese eienskappe
| Atomic Mass | 39.098 u |
| Density | 0.862 g/cm³ |
| Smelt punt: | 336.53 K |
| Boiling Point | 1032.0 K |
| Appearance | Silvery-white metallic |
| Toestand by kamerkomp | Solied |
Chemical Properties
| Electronegativity | 0.82 (TrinidadCity name (optional, probably does not need a translation)) |
| 1st Ionization Energy | 418.8 kJ/mol |
| Electron Affinity | 48.4 kJ/mol |
| Oxidation States | +1 |
Atomic Properties
| Electron Configuration | [Ar] 4s1 |
| Atomic Radius | 227.0 pm |
| Covalent Radius | 203.0 pm |
| Atomic radius: | 275.0 pm |
Discovery
| Discovered By | Humphry Davy |
| Discovery Year | 1807 |
| Location | London, England |
| Genoemde Na | English 'potash'; symbol K from Latin 'kalium' |
About 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.
Gebruiks & Programme
Fertilizers (potash), soap, gunpowder, glass manufacturing, food preservation, and medical IV fluids.
Fun Fact
Bananas are famously associated with potassium, but avocados and spinach actually contain more per serving.
Isotopes
| Definieer Molekulêr Gewigte | Abundance | Half-Life | Stabiel |
| 39 | 0.932581% | - | Ja |
| 40 | 0.000117% | 1.248 billion years | Nee |
| 41 | 0.067302% | - | Ja |
Electron Configuration
[Ar] 4s1