21
Sc
Scandium
44.955912 | 2
8
9
2
|
21
Sc
Scandium
44.955912 | 2
8
9
2
|
| General |
|---|
| Name | Scandium | | Symbol | Sc | | Number | 21 | | Chemical series | Transition elements | | Group / Period | 3 / 4 | | Block | d-block | | CAS registry number | 7440-20-2 |
| Physical properties |
|---|
| State | solid | | Density | 2.985 g/cm3 | | Melting point | 1814 K (1541°C, 2806°F) | | Boiling point | 3109 K (2836°C, 5137°F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 44.955912 g/mol | | Crystal structure | hexagonal | | Electronegativity | 1.36 | | Atomic radius | 160 pm | | Atomic radius (calculated) | 184 pm | | Electron configuration | [Ar] 3d1 4s2 | | Electrons per shell | 2, 8, 9, 2 | | Number of protons | 21 | | Number of neutrons | 24 |
|
Titanium