84
Po
Polonium
(209) | 2
8
18
32
18
6
|
84
Po
Polonium
(209) | 2
8
18
32
18
6
|
| General |
|---|
| Name | Polonium | | Symbol | Po | | Number | 84 | | Chemical series | Metalloids | | Group / Period | 16 / 6 | | Block | p-block | | CAS registry number | 7440-08-6 |
| Physical properties |
|---|
| State | solid | | Density | 9.4 g/cm3 | | Melting point | 527 K (254 °C, 489 °F) | | Boiling point | 1235 K (962 °C, 1764 °F) | | Critical point | |
| Atomic properties |
|---|
| Atomic Weight | (209) g/mol | | Crystal structure | cubic | | Electronegativity | 2.00 | | Atomic radius | 190 pm | | Atomic radius (calculated) | 135 pm | | Electron configuration | [Xe] 6s2 4f14 5d10 6p4 | | Electrons per shell | 2, 8, 18, 32, 18, 6 | | Number of protons | 84 | | Number of neutrons | 125 |
|
Astatine