| Thallium |
|
81Tl
|
|
|
| Ìhànsójú |
silvery white
 |
| Àwọn ìdámọ́ wíwọ́pọ̀ |
| Orúkọ, àmì-ìdámọ́, nọ́mbà |
thallium, Tl, 81 |
| Ìpèlóhùn |
/ˈθæliəm/, THAL-ee-əm |
| Ẹ̀ka ẹ́límẹ̀nti |
post-transition metal |
| Ẹgbẹ́, àsìkò, àdìpò |
13, 6, p |
| Ìwúwo átọ́mù |
204.3833 |
| Ìtòléra ẹ̀lẹ́ktrónì |
[Xe] 4f14 5d10 6s2 6p1
2, 8, 18, 32, 18, 3 |
| Physical properties |
| Phase |
solid |
| Density (near r.t.) |
11.85 g·cm−3 |
| Liquid density at m.p. |
11.22 g·cm−3 |
| Melting point |
577 K, 304 °C, 579 °F |
| Boiling point |
1746 K, 1473 °C, 2683 °F |
| Heat of fusion |
4.14 kJ·mol−1 |
| Heat of vaporization |
165 kJ·mol−1 |
| Molar heat capacity |
26.32 J·mol−1·K−1 |
| Vapor pressure |
| P (Pa) |
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K) |
882 |
977 |
1097 |
1252 |
1461 |
1758 |
|
| Atomic properties |
| Oxidation states |
3, 1 (mildly basic oxide) |
| Electronegativity |
1.62 (Pauling scale) |
| Ionization energies |
1st: 589.4 kJ·mol−1 |
| 2nd: 1971 kJ·mol−1 |
| 3rd: 2878 kJ·mol−1 |
| Atomic radius |
170 pm |
| Covalent radius |
170±8 pm |
| Van der Waals radius |
196 pm |
| Miscellanea |
| Crystal structure |
hexagonal
|
| Magnetic ordering |
diamagnetic[1] |
| Electrical resistivity |
(20 °C) 0.18 µΩ·m |
| Thermal conductivity |
46.1 W·m−1·K−1 |
| Thermal expansion |
(25 °C) 29.9 µm·m−1·K−1 |
| Speed of sound (thin rod) |
(20 °C) 818 m·s−1 |
| Young's modulus |
8 GPa |
| Shear modulus |
2.8 GPa |
| Bulk modulus |
43 GPa |
| Poisson ratio |
0.45 |
| Mohs hardness |
1.2 |
| Brinell hardness |
26.4 MPa |
| CAS registry number |
7440-28-0 |
| Àwọn ísótòpù dídúró jùlọ |
| Main article: Àwọn ísótòpù thallium |
|
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|
· r |
Thallium (
/ˈθæliəm/ THAL-ee-əm) je apilese kemika pelu ami-idamo Tl ati nomba atomu 81.
/ˈθæliəm/ THAL-ee-əm) je apilese kemika pelu ami-idamo Tl ati nomba atomu 81.
