ହୋଲ୍‌ମିଅମ

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Holmium,  67Ho
Holmium2.jpg
ସାଧାରଣ ଗୁଣ
ନାମ, ପ୍ରତୀକholmium, Ho
Appearancesilvery white
ଉଚ୍ଚାରଣ /ˈhlmiəm/ HOHL-mee-əm
Holmium 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)
-

Ho

Es
dysprosiumholmiumerbium
ପରମାଣୁ କ୍ରମାଙ୍କ (Z)67
ଶ୍ରେଣୀ, ବ୍ଳକgroup n/a, f-block
ପର୍ଯ୍ୟାୟperiod 6
ମୌଳିକ ପ୍ରକାର  lanthanide
ମାନକ ପରମାଣବିକ ଓଜନ (Ar)164.93032
ଇଲେକ୍‌ଟ୍ରୋନ୍ ବିନ୍ୟାସ[Xe] 4f11 6s2
per shell
2, 8, 18, 29, 8, 2
ଭୌତିକ ଗୁଣ
ଅବସ୍ଥାsolid
ଗଳନାଙ୍କ1734 K ​(1461 °C, ​2662 °F)
ସ୍ଫୁଟନାଙ୍କ2993 K ​(2720 °C, ​4928 °F)
Density near r.t.8.79 g/cm3
when liquid, at m.p.8.34 g/cm3
Heat of fusion17.0 kJ/mol
Heat of 265 kJ/mol
Molar heat capacity27.15 J/(mol·K)
 pressure
P (Pa) 1 10 100 1 k 10 k 100 k
at T (K) 1432 1584 (1775) (2040) (2410) (2964)
Atomic properties
Oxidation states3, 2, 1
(basic oxide)
ElectronegativityPauling scale: 1.23
Atomic radiusempirical: 176 pm
Covalent radius192±7 pm
Miscellanea
Crystal structurehexagonal close-packed (hcp)
Hexagonal close packed crystal structure for holmium
Speed of sound thin rod2760 m/s (at 20 °C)
Thermal expansion(r.t.) (poly) 11.2 µm/(m·K)
Thermal conductivity16.2 W/(m·K)
Electrical resistivity(r.t.) (poly) 814 n Ω·m
Magnetic orderingparamagnetic
Young's modulus64.8 GPa
Shear modulus26.3 GPa
Bulk modulus40.2 GPa
Poisson ratio0.231
Vickers hardness481 MPa
Brinell hardness746 MPa
CAS Number7440-60-0
ଇତିହାସ
ଆବିଷ୍କାରMarc Delafontaine (1878)
Most stable isotopes of holmium
iso NA half-life DM DE (MeV) DP
163Ho syn 4570 yr ε 0.003 163Dy
164Ho syn 29 min ε 0.987 164Dy
165Ho 100% 165Ho is stable with 98 neutrons
166Ho syn 26.763 h β 1.855 166Er
167Ho syn 3.1 h β 1.007 167Er
| references

ହୋଲ୍‌ମିଅମ ହେଉଛି ଏକ ରାସାୟନିକ ମୌଳିକ ଯାହାର ପ୍ରତୀକ Hoପରମାଣୁ କ୍ରମାଙ୍କ ୬୭ ଅଟେ ।

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