ഫലകം:Infobox cerium
ഫലകം വിക്കിപീഡിയ / From Wikipedia, the free encyclopedia
വസ്തുതകൾ Cerium, Pronunciation ...
Cerium | |||||||||||||||
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Pronunciation | /ˈsɪəriəm/ | ||||||||||||||
Appearance | silvery white | ||||||||||||||
Cerium ആവർത്തനപ്പട്ടികയിൽ | |||||||||||||||
ഗ്രൂപ്പ് | f-block groups (no number) | ||||||||||||||
പിരീഡ് | period 6 | ||||||||||||||
ബ്ലോക്ക് | f-block | ||||||||||||||
ഇലക്ട്രോൺ വിന്യാസം | [Xe] 4f1 5d1 6s2[1] | ||||||||||||||
Electrons per shell | 2, 8, 18, 19, 9, 2 | ||||||||||||||
Physical properties | |||||||||||||||
Phase at STP | solid | ||||||||||||||
ദ്രവണാങ്കം | 1068 K (795 °C, 1463 °F) | ||||||||||||||
ക്വഥനാങ്കം | 3716 K (3443 °C, 6229 °F) | ||||||||||||||
Density (near r.t.) | 6.770 g/cm3 | ||||||||||||||
when liquid (at m.p.) | 6.55 g/cm3 | ||||||||||||||
ദ്രവീകരണ ലീനതാപം | 5.46 kJ/mol | ||||||||||||||
Heat of vaporization | 398 kJ/mol | ||||||||||||||
Molar heat capacity | 26.94 J/(mol·K) | ||||||||||||||
Vapor pressure
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Atomic properties | |||||||||||||||
Oxidation states | +1, +2, +3, +4 (a mildly basic oxide) | ||||||||||||||
Electronegativity | Pauling scale: 1.12 | ||||||||||||||
അയോണീകരണ ഊർജം |
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ആറ്റോമിക ആരം | empirical: 181.8 pm | ||||||||||||||
കൊവാലന്റ് റേഡിയസ് | 204±9 pm | ||||||||||||||
Spectral lines of cerium | |||||||||||||||
Other properties | |||||||||||||||
Natural occurrence | primordial | ||||||||||||||
ക്രിസ്റ്റൽ ഘടന | double hexagonal close-packed (dhcp) β-Ce | ||||||||||||||
ക്രിസ്റ്റൽ ഘടന | face-centered cubic (fcc) γ-Ce | ||||||||||||||
Speed of sound thin rod | 2100 m/s (at 20 °C) | ||||||||||||||
Thermal expansion | γ, poly: 6.3 µm/(m⋅K) (at r.t.) | ||||||||||||||
താപചാലകത | 11.3 W/(m⋅K) | ||||||||||||||
Electrical resistivity | β, poly: 828 nΩ⋅m (at r.t.) | ||||||||||||||
കാന്തികത | paramagnetic[2] | ||||||||||||||
കാന്തികക്ഷമത | (β) +2450.0·10−6 cm3/mol (293 K)[3] | ||||||||||||||
Young's modulus | γ form: 33.6 GPa | ||||||||||||||
Shear modulus | γ form: 13.5 GPa | ||||||||||||||
ബൾക്ക് മോഡുലസ് | γ form: 21.5 GPa | ||||||||||||||
Poisson ratio | γ form: 0.24 | ||||||||||||||
Mohs hardness | 2.5 | ||||||||||||||
Vickers hardness | 210–470 MPa | ||||||||||||||
Brinell hardness | 186–412 MPa | ||||||||||||||
സി.എ.എസ് നമ്പർ | 7440-45-1 | ||||||||||||||
History | |||||||||||||||
Naming | after dwarf planet Ceres, itself named after Roman deity of agriculture Ceres | ||||||||||||||
Discovery | Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger (1803) | ||||||||||||||
First isolation | Carl Gustaf Mosander (1838) | ||||||||||||||
Isotopes of cerium കാ • [{{fullurl:Template:{{{template}}}|action=edit}} തി] | |||||||||||||||
Template:infobox cerium isotopes does not exist | |||||||||||||||
വർഗ്ഗം: Cerium | references |
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കൂടുതൽ വിവരങ്ങൾ Ce · Cerium ...
Ce · Cerium | ||
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Spectral lines image |
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