75
Re
Rhenium
186.207 | 2
8
18
32
13
2
|
75
Re
Rhenium
186.207 | 2
8
18
32
13
2
|
| General |
|---|
| Name | Rhenium | | Symbol | Re | | Number | 75 | | Chemical series | Transition elements | | Group / Period | 7 / 6 | | Block | d-block | | CAS registry number | 7440-15-5 |
| Physical properties |
|---|
| State | solid | | Density | 21.02 g/cm3 | | Melting point | 3459 K (3186 °C, 5767 °F) | | Boiling point | 5869 K (5596 °C, 10105 °F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 186.207 g/mol | | Crystal structure | hexagonal | | Electronegativity | 1.90 | | Atomic radius | 135 pm | | Atomic radius (calculated) | 188 pm | | Electron configuration | [Xe] 4f14 5d5 6s2 | | Electrons per shell | 2, 8, 18, 32, 13, 2 | | Number of protons | 75 | | Number of neutrons | 111 |
|
Osmium