Alkali Metals Overview
The table added below tells us in brief about the properties of Alkali Metals
|
Metals |
Lithium |
Sodium |
Potassium |
Rubidium |
Cesium |
|---|---|---|---|---|---|
| Atomic number | 3 | 11 | 19 | 37 | 55 |
| Symbol | Li | Na | K | Rb | Cs |
| Configuration | [He]2s1 | [Ne]3s1 | [Ar]4s1 | [Kr]5s1 | [Xe]6s1 |
| Abundance (ppm) | 65 | 28300 | 25900 | 310 | 7 |
| Reduction potential (v) | -3.04 | -2.714 | -2.925 | -2.93 | -2.927 |
| Ionization energy kJ/mol | 520 | 496 | 419 | 403 | 376 |
| Hydration enthalpy kJ/mol | -506 | -406 | -330 | -310 | -276 |
| Flame color | Crimson red | Yellow | Violet | Red violet | Blue |
| Density g/cm3 | 0.53 | 0.97 | 0.86 | 1.53 | 1.9 |
| Atomic size (pm) | 152 | 186 | 227 | 248 | 265 |
Alkali Metals
Alkali metals are the first group of s-block elements that are found on the leftmost side of the periodic table. Alkali metals are the most electropositive elements on the periodic table as they easily lose electrons. These metals formed various useful compounds with halides, oxygen, and sulfur. Alkali metals form a strong base in their aqueous solution.
In this article, we will learn about, alkali metals, their electronic configuration, periodic trends, physical and chemical properties, and others in detail.