రీనియం, 00Re |
|
Pronunciation | (REE-nee-əm) |
---|
Appearance | silvery-white |
---|
|
|
| |
---|
|
|
|
Group | మూస:Infobox element/symbol-to-group/format |
---|
Period | period 6 |
---|
Block | d-block |
---|
Electron configuration | [Xe] 4f14 5d5 6s2 |
---|
Electrons per shell | 2, 8, 18, 32, 13, 2 |
---|
|
Phase at STP | solid |
---|
Melting point | 3459 K (3186 °C, 5767 °F) |
---|
Boiling point | 5869 K (5596 °C, 10105 °F) |
---|
Density (near r.t.) | 21.02 g/cm3 |
---|
when liquid (at m.p.) | 18.9 g/cm3 |
---|
Heat of fusion | 60.43 kJ/mol |
---|
Heat of vaporization | 704 kJ/mol |
---|
Molar heat capacity | 25.48 J/(mol·K) |
---|
Vapor pressure
P (Pa)
|
1
|
10
|
100
|
1 k
|
10 k
|
100 k
|
at T (K)
|
3303
|
3614
|
4009
|
4500
|
5127
|
5954
|
|
|
Oxidation states | −3, −1, 0, +1, +2, +3, +4, +5, +6, +7 (a mildly acidic oxide) |
---|
Electronegativity | Pauling scale: 1.9 |
---|
Ionization energies | |
---|
Atomic radius | empirical: 137 pm |
---|
Covalent radius | 151±7 pm |
---|
Spectral lines of రీనియం |
|
Natural occurrence | primordial |
---|
Crystal structure | hexagonal close-packed (hcp) |
---|
Speed of sound thin rod | 4700 m/s (at 20 °C) |
---|
Thermal expansion | 6.2 µm/(m⋅K) |
---|
Thermal conductivity | 48.0 W/(m⋅K) |
---|
Electrical resistivity | 193 n Ω⋅m (at 20 °C) |
---|
Magnetic ordering | paramagnetic[3] |
---|
Young's modulus | 463 GPa |
---|
Shear modulus | 178 GPa |
---|
Bulk modulus | 370 GPa |
---|
Poisson ratio | 0.30 |
---|
Mohs hardness | 7.0 |
---|
Vickers hardness | 2450 MPa |
---|
Brinell hardness | 1320 MPa |
---|
CAS Number | 7440-15-5 |
---|
|
Discovery | Masataka Ogawa (1908) |
---|
First isolation | Masataka Ogawa (1908) |
---|
Named by | Walter Noddack, Ida Noddack, Otto Berg (1922) |
---|
|
Template:infobox రీనియం isotopes does not exist |
Category: రీనియం | references |
References
These references will appear in the article, but this list appears only on this page.