ରେଡ଼ିଅମ

ଉଇକିପିଡ଼ିଆ ରୁ
ସିଧାସଳଖ ଯିବେ ଦିଗବାରେଣିକୁ, ଖୋଜିବେ
Radium,  88Ra
Radium226.jpg
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକ radium, Ra
Appearance silvery white metallic
ଉଚ୍ଚାରଣ /ˈrdiəm/
ray-dee-əm
Radium 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)
Ba

Ra

Ubn
franciumradiumactinium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z) 88
ଶ୍ରେଣୀ, ବ୍ଳକ group 2 (alkaline earth metals), s-block
ପର୍ଯ୍ୟାୟ period 7
ମୌଳିକ ପ୍ରକାର   alkaline earth metal
ମାନକ ପରମାଣବିକ ଓଜନ (Ar) (226)
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ [Rn] 7s2
per shell
2, 8, 18, 32, 18, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥା solid
ଗଳନାଙ୍କ 973 K ​(700 °C, ​1292 °F)
ସ୍ଫୁଟନାଙ୍କ 2010 K ​(1737 °C, ​3158.6 °F)
Density near r.t. 5.5 g/cm3
Heat of fusion 8.5 kJ/mol
Heat of 113 kJ/mol
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 819 906 1037 1209 1446 1799
Atomic properties
Oxidation states 2 (strongly basic oxide)
Electronegativity Pauling scale: 0.9
Covalent radius 221±2 pm
Van der Waals radius 283 pm
Miscellanea
Crystal structure body-centered cubic (bcc)
Body-centered cubic crystal structure for radium
Thermal conductivity 18.6 W/(m·K)
Electrical resistivity 1 µ Ω·m (at 20 °C)
Magnetic ordering nonmagnetic
CAS Number 7440-14-4
ଇତିହାସ
ଆବିଷ୍କାର Pierre Curie and Marie Curie (1898)
First isolation Marie Curie (1902)
Most stable isotopes of radium
iso NA half-life DM DE (MeV) DP
223Ra trace 11.43 d α 5.99 219Rn
224Ra trace 3.6319 d α 5.789 220Rn
226Ra trace 1601 y α 4.871 222Rn
228Ra trace 5.75 y β 0.046 228Ac
| references

ରେଡ଼ିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Raପରମାଣୁ କ୍ରମାଙ୍କ ୮୮ ଅଟେ ।

ଧର୍ମ[ସମ୍ପାଦନା]

ଭୌତିକ[ସମ୍ପାଦନା]

ରସାୟନିକ[ସମ୍ପାଦନା]

ସମସ୍ଥାନିକ[ସମ୍ପାଦନା]

ଉପସ୍ଥିତି[ସମ୍ପାଦନା]

ଗଠନ[ସମ୍ପାଦନା]

ଉତ୍ପାଦନ[ସମ୍ପାଦନା]

ବ୍ୟବହାର[ସମ୍ପାଦନା]

ଆହୁରି ଦେଖନ୍ତୁ[ସମ୍ପାଦନା]

ଆଧାର[ସମ୍ପାଦନା]

ସହାୟକ ଗ୍ରନ୍ଥ[ସମ୍ପାଦନା]

ଆହୁରି ପଢନ୍ତୁ[ସମ୍ପାଦନା]

ବାହାର ଲିଙ୍କ[ସମ୍ପାଦନା]