
Group 13 elements
Group 13 of the periodic table contains these elements: Boron, Aluminium, Gallium, Indium, Thallium, Nihonium.
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| No. | Symbol | Element | Atomic weight (u) | Density (g/cm³) | Melting point (K) | Boiling point (K) | Electronegativity | Discovered |
|---|---|---|---|---|---|---|---|---|
| 5 | B | Boron | 10.806 | 2.08 | 2349 | 4200 | 2.04 | 1808 |
| 13 | Al | Aluminium | 26.9815 | 2.7 | 933.47 | 2743 | 1.61 | 1824 |
| 31 | Ga | Gallium | 69.7231 | 5.91 | 302.915 | 2673 | 1.81 | 1875 |
| 49 | In | Indium | 114.818 | 7.31 | 429.749 | 2345 | 1.78 | 1863 |
| 81 | Tl | Thallium | 204.382 | 11.85 | 577 | 1746 | 1.62 | 1861 |
| 113 | Nh | Nihonium | 286 | 16 | 700 | 1430 | - | 2003 |