Compare chemical elements
All chemical elements
|
Actinium
✕
|
| Symbol |
Ac |
| Atomic number |
89 |
| Chemical property |
Actinide |
| Origin o the name |
the Greek aktis, 'ray' |
| Group |
3 |
| Period |
7 |
| Density (g/cm³) |
10.07 |
| Melting point (K) |
1323 |
| Boiling point (K) |
3471 |
| Heat capacity (J/(g·K)) |
0.12 |
| Electro-negativity |
1.1 |
| Abundance in earth's crust (mg/kg) |
0 |