44
Ru
Ruthenium
101.07 | 2
8
18
15
1
|
44
Ru
Ruthenium
101.07 | 2
8
18
15
1
|
| General |
|---|
| Name | Ruthenium | | Symbol | Ru | | Number | 44 | | Chemical series | Transition elements | | Group / Period | 8 / 5 | | Block | d-block | | CAS registry number | 7440-18-8 |
| Physical properties |
|---|
| State | solid | | Density | 12.45 g/cm3 | | Melting point | 2607 K (2334°C, 4233°F) | | Boiling point | 4423 K (4150 °C, 7502 °F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | 101.07 g/mol | | Crystal structure | hexagonal | | Electronegativity | 2.20 | | Atomic radius | 130 pm | | Atomic radius (calculated) | 178 pm | | Electron configuration | [Kr] 4d7 5s1 | | Electrons per shell | 2, 8, 18, 15, 1 | | Number of protons | 44 | | Number of neutrons | 57 |
|
Rhodium