ସେରିଅମ

ଉଇକିପିଡ଼ିଆ ରୁ
ସିଧାସଳଖ ଯିବେ ଦିଗବାରେଣିକୁ, ଖୋଜିବେ
Cerium,  58Ce
Cerium2.jpg
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ cerium, Ce
Appearance silvery white
ଉଚ୍ଚାରଣ /ˈsɪəriəm/
Cerium in the periodic table
Hydrogen (other non-metal)
Helium (noble gas)
Lithium (alkali metal)
Beryllium (alkaline earth metal)
Boron (metalloid)
Carbon (other non-metal)
Nitrogen (other non-metal)
Oxygen (other non-metal)
Fluorine (halogen)
Neon (noble gas)
Sodium (alkali metal)
Magnesium (alkaline earth metal)
Aluminium (post-transition metal)
Silicon (metalloid)
Phosphorus (other non-metal)
Sulfur (other non-metal)
Chlorine (halogen)
Argon (noble gas)
Potassium (alkali metal)
Calcium (alkaline earth metal)
Scandium (transition metal)
Titanium (transition metal)
Vanadium (transition metal)
Chromium (transition metal)
Manganese (transition metal)
Iron (transition metal)
Cobalt (transition metal)
Nickel (transition metal)
Copper (transition metal)
Zinc (transition metal)
Gallium (post-transition metal)
Germanium (metalloid)
Arsenic (metalloid)
Selenium (other non-metal)
Bromine (halogen)
Krypton (noble gas)
Rubidium (alkali metal)
Strontium (alkaline earth metal)
Yttrium (transition metal)
Zirconium (transition metal)
Niobium (transition metal)
Molybdenum (transition metal)
Technetium (transition metal)
Ruthenium (transition metal)
Rhodium (transition metal)
Palladium (transition metal)
Silver (transition metal)
Cadmium (transition metal)
Indium (post-transition metal)
Tin (post-transition metal)
Antimony (metalloid)
Tellurium (metalloid)
Iodine (halogen)
Xenon (noble gas)
Caesium (alkali metal)
Barium (alkaline earth metal)
Lanthanum (lanthanoid)
Cerium (lanthanoid)
Praseodymium (lanthanoid)
Neodymium (lanthanoid)
Promethium (lanthanoid)
Samarium (lanthanoid)
Europium (lanthanoid)
Gadolinium (lanthanoid)
Terbium (lanthanoid)
Dysprosium (lanthanoid)
Holmium (lanthanoid)
Erbium (lanthanoid)
Thulium (lanthanoid)
Ytterbium (lanthanoid)
Lutetium (lanthanoid)
Hafnium (transition metal)
Tantalum (transition metal)
Tungsten (transition metal)
Rhenium (transition metal)
Osmium (transition metal)
Iridium (transition metal)
Platinum (transition metal)
Gold (transition metal)
Mercury (transition metal)
Thallium (post-transition metal)
Lead (post-transition metal)
Bismuth (post-transition metal)
Polonium (post-transition metal)
Astatine (halogen)
Radon (noble gas)
Francium (alkali metal)
Radium (alkaline earth metal)
Actinium (actinoid)
Thorium (actinoid)
Protactinium (actinoid)
Uranium (actinoid)
Neptunium (actinoid)
Plutonium (actinoid)
Americium (actinoid)
Curium (actinoid)
Berkelium (actinoid)
Californium (actinoid)
Einsteinium (actinoid)
Fermium (actinoid)
Mendelevium (actinoid)
Nobelium (actinoid)
Lawrencium (actinoid)
Rutherfordium (transition metal)
Dubnium (transition metal)
Seaborgium (transition metal)
Bohrium (transition metal)
Hassium (transition metal)
Meitnerium (unknown chemical properties)
Darmstadtium (unknown chemical properties)
Roentgenium (unknown chemical properties)
Copernicium (transition metal)
Ununtrium (unknown chemical properties)
Flerovium (unknown chemical properties)
Ununpentium (unknown chemical properties)
Livermorium (unknown chemical properties)
Ununseptium (unknown chemical properties)
Ununoctium (unknown chemical properties)
-

Ce

Th
lanthanumceriumpraseodymium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z) 58
ଶ୍ରେଣୀ, ବ୍ଳକ group n/a, f-block
ପର୍ଯ୍ୟାୟ period 6
ମୌଳିକ ପ୍ରକାର   lanthanide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar) 140.116
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Xe] 4f1 5d1 6s2[୧]
per shell
2, 8, 18, 19, 9, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା solid
ଗଳନାଙ୍କ 1068 K ​(795 °C, ​1463 °F)
ସ୍ଫୁଟନାଙ୍କ 3716 K ​(3443 °C, ​6229 °F)
Density near r.t. 6.770 g/cm3
when liquid, at m.p. 6.55 g/cm3
Heat of fusion 5.46 kJ/mol
Heat of 398 kJ/mol
Molar heat capacity 26.94 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1992 2194 2442 2754 3159 3705
Atomic properties
Oxidation states 4, 3, 2, 1
(mildly basic oxide)
Electronegativity Pauling scale: 1.12
Atomic radius empirical: 181.8 pm
Covalent radius 204±9 pm
Miscellanea
Crystal structure face-centered cubic (fcc)
Face-centered cubic crystal structure for cerium
Speed of sound thin rod 2100 m/s (at 20 °C)
Thermal expansion (r.t.) (γ, poly) 6.3 µm/(m·K)
Thermal conductivity 11.3 W/(m·K)
Electrical resistivity (r.t.) (β, poly) 828 n Ω·m
Magnetic ordering paramagnetic[୨]
Young's modulus (γ form) 33.6 GPa
Shear modulus (γ form) 13.5 GPa
Bulk modulus (γ form) 21.5 GPa
Poisson ratio (γ form) 0.24
Mohs hardness 2.5
Vickers hardness 270 MPa
Brinell hardness 412 MPa
CAS Number 7440-45-1
ଇତିହାସ
ଆବିଷ୍କାର Martin Heinrich Klaproth, Jöns Jakob Berzelius, Wilhelm Hisinger (1803)
First isolation Carl Gustaf Mosander (1839)
Most stable isotopes of cerium
iso NA half-life DM DE (MeV) DP
134Ce syn 3.16 d ε 0.500 134La
136Ce 0.185% >3.8×1016 y β+β+ 2.419 136Ba
138Ce 0.251% >1.5×1014 y β+β+ 0.694 138Ba
139Ce syn 137.640 d ε 0.278 139La
140Ce 88.450% 140Ce is stable with 82 neutrons
141Ce syn 32.501 d β 0.581 141Pr
142Ce 11.114% >5×1016 y ββ 1.417 142Nd
α 1.298 138Ba
144Ce syn 284.893 d β 0.319 144Pr
| references

ସେରିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Ceପରମାଣୁ କ୍ରମାଙ୍କ ୫୮ ଅଟେ ।

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