ഫലകം:Infobox cobalt

കൊബാൾട്ട്, ₀₀Co

cobalt chips
കൊബാൾട്ട്
Pronunciation	/ˈkoʊbɒlt/ ⓘ
Appearance	metallic with gray tinge
Standard atomic weight Ar°(Co)
	ഫലകം:Infobox element/standard atomic weight format
കൊബാൾട്ട് in the periodic table
Hydrogen Helium Lithium Beryllium Boron Carbon Nitrogen Oxygen Fluorine Neon Sodium Magnesium Aluminium Silicon Phosphorus Sulfur Chlorine Argon Potassium Calcium Scandium Titanium Vanadium Chromium Manganese Iron Cobalt Nickel Copper Zinc Gallium Germanium Arsenic Selenium Bromine Krypton Rubidium Strontium Yttrium Zirconium Niobium Molybdenum Technetium Ruthenium Rhodium Palladium Silver Cadmium Indium Tin Antimony Tellurium Iodine Xenon Caesium Barium Lanthanum Cerium Praseodymium Neodymium Promethium Samarium Europium Gadolinium Terbium Dysprosium Holmium Erbium Thulium Ytterbium Lutetium Hafnium Tantalum Tungsten Rhenium Osmium Iridium Platinum Gold Mercury (element) Thallium Lead Bismuth Polonium Astatine Radon Francium Radium Actinium Thorium Protactinium Uranium Neptunium Plutonium Americium Curium Berkelium Californium Einsteinium Fermium Mendelevium Nobelium Lawrencium Rutherfordium Dubnium Seaborgium Bohrium Hassium Meitnerium Darmstadtium Roentgenium Copernicium Nihonium Flerovium Moscovium Livermorium Tennessine Oganesson - ↑ Co ↓ Rh ഇരുമ്പ് ← കൊബാൾട്ട് → നിക്കൽ
Group	group 9
Period	period 4
Block	d-block
Electron configuration	[Ar] 3d7 4s2
Electrons per shell	2, 8, 15, 2
Physical properties
Color	a grayish silver
Phase at STP	solid
Melting point	1768 K ​(1495 °C, ​2723 °F)
Boiling point	3200 K ​(2927 °C, ​5301 °F)
Density (near r.t.)	8.90 g/cm3
when liquid (at m.p.)	7.75 g/cm3
Heat of fusion	16.06 kJ/mol
Heat of vaporization	377 kJ/mol
Molar heat capacity	24.81 J/(mol·K)
Vapor pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 1790 1960 2165 2423 2755 3198
Atomic properties
Oxidation states	−3, −1, +1, +2, +3, +4, +5 (an amphoteric oxide)
Electronegativity	Pauling scale: 1.88
Ionization energies	(more)
Atomic radius	empirical: 135 pm calculated: 152 pm
Covalent radius	126 pm
Spectral lines of കൊബാൾട്ട്
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal
Speed of sound thin rod	4720 m/s (at 20 °C)
Thermal expansion	13.0 µm/(m⋅K) (at 25 °C)
Thermal conductivity	100 W/(m⋅K)
Electrical resistivity	62.4 n Ω⋅m (at 20 °C)
Magnetic ordering	ferromagnetic
Young's modulus	209 GPa
Shear modulus	75 GPa
Bulk modulus	180 GPa
Poisson ratio	0.31
Mohs hardness	5.0
Vickers hardness	1043 MPa
Brinell hardness	700 MPa
CAS Number	7440-48-4
Isotopes of കൊബാൾട്ട്