[[Category:Template:Pagetype with short description]]
Astatine, 85At| Astatine |
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| Pronunciation | (Template:Respell) |
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| Appearance | black solid (presumed) |
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| Mass number | [210] |
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| Astatine in the periodic table |
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|
|
| Atomic number (Z) | 85 |
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| Group | group 17 (halogens) |
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| Period | period 6 |
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| Block | p-block |
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| Electron configuration | [Xe] 4f14 5d10 6s2 6p5 |
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| Electrons per shell | 2, 8, 18, 32, 18, 7 |
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| Physical properties |
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| Phase at STP | solid |
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| Melting point | 575 K (302 °C, 576 °F) |
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| Boiling point | 610 K (337 °C, 639 °F) |
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| Heat of vaporization | 40 kJ/mol |
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Vapor pressure
| P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
| at T (K)
|
361
|
392
|
429
|
475
|
531
|
607
|
|
| Atomic properties |
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| Oxidation states | −1, +1, +3, +5, +7[1] |
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| Electronegativity | Pauling scale: 2.2 |
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| Covalent radius | 150 pm |
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| Van der Waals radius | 202 pm |
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| Other properties |
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| Natural occurrence | from decay |
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| Thermal conductivity | 1.7 W/(m·K) |
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| Magnetic ordering | no data |
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| CAS Number | 7440-68-8 |
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| Main isotopes of astatine |
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|
|
Category: Astatine | references |
[[Category:Infobox templates|Template:Remove first word]]