Native antimony
Antimony, 51Sb
 |
| General properties |
| Pronunciation |
UK , AN-ti-mə-nee
US , AN-ti-moh-nee
|
| Appearance |
silvery lustrous gray |
|
| Antimony in the periodic table
|
|
|
| Atomic number (Z) |
51 |
|
Group, period
|
group 15 (pnictogens), period 5
|
| Block |
p-block |
| Element category |
metalloid
|
|
Standard atomic weight (Ar)
|
7002121760000000000♠121.760(1) |
| Electron configuration |
[Kr] 4d10 5s2 5p3
|
|
Electrons per shell
|
2, 8, 18, 18, 5 |
| Physical properties |
| Phase |
solid |
| Melting point |
903.78 K (630.63 °C, 1167.13 °F) |
| Boiling point |
1908 K (1635 °C, 2975 °F) |
|
Density near r.t.
|
6.697 g/cm3
|
| when liquid, at m.p. |
6.53 g/cm3
|
| Heat of fusion |
19.79 kJ/mol
|
| Heat of vaporization |
193.43 kJ/mol |
| Molar heat capacity |
25.23 J/(mol·K) |
Vapor pressure
|
P (Pa)
|
1 |
10 |
100 |
1 k |
10 k |
100 k |
| at T (K)
|
807 |
876 |
1011 |
1219 |
1491 |
1858 |
|
| Wikipedia
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