Alkali Metal Elements
Alkali metals are soft, highly reactive metals in Group 1. They have one valence electron and react vigorously with water.
6 elements
3Li
Lithium
7.0 uSolidEN: 0.98
11Na
Sodium
22.9897693 uSolidEN: 0.93
19K
Potassium
39.0983 uSolidEN: 0.82
37Rb
Rubidium
85.468 uSolidEN: 0.82
55Cs
Cesium
132.9054520 uSolidEN: 0.79
87Fr
Francium
223.01973 uSolidEN: 0.7
Property Comparison
| # | Symbol | Name | Mass (u) | State | MP (K) | BP (K) | EN | Density |
|---|---|---|---|---|---|---|---|---|
| 3 | Li | Lithium | 7.0 | Solid | 453.65 | 1615 | 0.98 | 0.534 |
| 11 | Na | Sodium | 22.9897693 | Solid | 370.95 | 1156 | 0.93 | 0.97 |
| 19 | K | Potassium | 39.0983 | Solid | 336.53 | 1032 | 0.82 | 0.89 |
| 37 | Rb | Rubidium | 85.468 | Solid | 312.46 | 961 | 0.82 | 1.53 |
| 55 | Cs | Cesium | 132.9054520 | Solid | 301.59 | 944 | 0.79 | 1.93 |
| 87 | Fr | Francium | 223.01973 | Solid | 300 | — | 0.7 | — |