3Li7.0
Lithium
Alkali Metal
Solid at STP
Period 2Group 1Block SDiscovered 1817
[He]2s1
Lithium (from Greek:λίθος lithos, "stone") is a chemical element with the symbol Li and atomic number 3. It is a soft, silver-white metal belonging to the alkali metal group of chemical elements. Under standard conditions it is the lightest metal and the least dense solid element.
📖 Read more on Wikipedia →Atomic Properties
| Atomic Number | 3 |
| Atomic Mass | 7.0 u |
| Electron Configuration | [He]2s1 |
| Oxidation States | +1 |
| Electronegativity | 0.98 (Pauling) |
| Atomic Radius | 182 pm |
| Ionization Energy | 5.392 eV |
| Electron Affinity | 0.618 eV |
| Block | S |
Physical Properties
| Appearance | silvery-white |
| Standard State | Solid |
| Melting Point | 453.65 K (180.5 °C) |
| Boiling Point | 1615 K (1341.8 °C) |
| Density | 0.534 g/cm³ |
| Molar Heat | 24.86 J/(mol·K) |
| CPK Color | #CC80FF |
Classification
| Category | Alkali Metal |
| Group Block | Alkali metal |
| Period | 2 |
| Group | 1 |
| Block | S |
Discovery
| Year Discovered | 1817 |
| Discovered By | Johan August Arfwedson |
| Electron Shells | 2, 1 |