ଆକ୍ଟିନିଅମ

ଆକ୍ଟିନିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Acପରମାଣୁ କ୍ରମାଙ୍କ ୮୯ ।

Actinium,  89Ac
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକactinium, Ac
Appearancesilvery-white
ଉଚ୍ଚାରଣ/ækˈtɪniəm/
ak-TIN-nee-əm
Actinium 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)
La

Ac

(Uqu)
radiumactiniumthorium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)89
ଶ୍ରେଣୀ, ବ୍ଳକgroup n/a, f-block
ପର୍ଯ୍ୟାୟperiod 7
ମୌଳିକ ପ୍ରକାର  actinide, sometimes considered a transition metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)(227)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Rn] 6d1 7s2
per shell
2, 8, 18, 32, 18, 9, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ(circa) 1323 K ​(1050 °C, ​1922 °F)
ସ୍ଫୁଟନାଙ୍କ3471 K ​(3198 °C, ​5788 °F)
Density near r.t.10 g/cm3
Heat of fusion14 kJ/mol
Heat of 400 kJ/mol
Molar heat capacity27.2 J/(mol·K)
Atomic properties
Oxidation states3 ​neutral oxide
ElectronegativityPauling scale: 1.1
Covalent radius215 pm
Miscellanea
Crystal structure ​face-centered cubic (fcc)
Face-centered cubic crystal structure for actinium
Thermal conductivity12 W/(m·K)
Magnetic orderingno data
CAS Number7440-34-8
ଇତିହାସ
ଆବିଷ୍କାରAndré-Louis Debierne (1899)
First isolationAndré-Louis Debierne (1899)
Most stable isotopes of actinium
isoNAhalf-lifeDMDE (MeV)DP
225Actrace10 dα5.935221Fr
226Acsyn29.37 hβ1.117226Th
ε0.640226Ra
α5.536222Fr
227Actrace21.772 yβ0.045227Th
α5.042223Fr
| references

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ସହାୟକ ଗ୍ରନ୍ଥ

  • Meyer, Gerd and Morss, Lester R. Synthesis of lanthanide and actinide compounds, Springer, 1991, ISBN 0-7923-1018-7

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