సీజియం, 00Cs |
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| Pronunciation | (SEE-zee-əm) |
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| Appearance | silvery gold |
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| Group | మూస:Infobox element/symbol-to-group/format |
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| Period | period 6 |
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| Block | s-block |
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| Electron configuration | [Xe] 6s1 |
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| Electrons per shell | 2, 8, 18, 18, 8, 1 |
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| Phase at STP | solid |
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| Melting point | 301.7 K (28.5 °C, 83.3 °F) |
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| Boiling point | 944 K (671 °C, 1240 °F) |
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| Density (near r.t.) | 1.93 g/cm3 |
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| when liquid (at m.p.) | 1.843 g/cm3 |
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| Critical point | 1938 K, 9.4[3] MPa |
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| Heat of fusion | 2.09 kJ/mol |
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| Heat of vaporization | 63.9 kJ/mol |
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| Molar heat capacity | 32.210 J/(mol·K) |
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Vapor pressure
| P (Pa)
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1
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10
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100
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1 k
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10 k
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100 k
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| at T (K)
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418
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469
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534
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623
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750
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940
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| Oxidation states | −1, +1[4] (a strongly basic oxide) |
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| Electronegativity | Pauling scale: 0.79 |
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| Atomic radius | empirical: 265 pm |
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| Covalent radius | 244±11 pm |
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| Van der Waals radius | 343 pm |
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 Spectral lines of సీజియం |
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| Natural occurrence | primordial |
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| Crystal structure | body-centered cubic (bcc) |
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| Thermal expansion | 97 µm/(m⋅K) (at 25 °C) |
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| Thermal conductivity | 35.9 W/(m⋅K) |
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| Electrical resistivity | 205 n Ω⋅m (at 20 °C) |
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| Magnetic ordering | paramagnetic[5] |
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| Young's modulus | 1.7 GPa |
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| Bulk modulus | 1.6 GPa |
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| Mohs hardness | 0.2 |
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| Brinell hardness | 0.14 MPa |
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| CAS Number | 7440-46-2 |
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| Discovery | Robert Bunsen and Gustav Kirchhoff (1860) |
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| First isolation | Carl Setterberg (1882) |
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| Template:infobox సీజియం isotopes does not exist |
 Category: సీజియం
| references |
References
These references will appear in the article, but this list appears only on this page.
