Àdàkọ:Infobox magnésíọ̀mù

Magnésíọ̀mù, ₁₂Mg

Magnésíọ̀mù
Pípè	/mæɡˈniːziəm/ ​(mag-NEE-zee-əm)
Ìhànsójú	shiny grey solid
Ìwúwo átọ̀mù Ar, std(Mg)	[24.304, 24.307] conventional: 24.305
Magnésíọ̀mù ní orí tábìlì àyè
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 Be ↑ Mg ↓ Ca sódíọ̀mù ← magnésíọ̀mù → alumíníọ̀mù
Nọ́mbà átọ̀mù (Z)	12
Ẹgbẹ́	group 2 (alkaline earth metals)
Àyè	àyè 3
Àdìpọ̀	Àdìpọ̀-s
Ẹ̀ka ẹ́límẹ́ntì	Alkaline earth metal
Ìtò ẹ̀lẹ́ktrọ́nù	[Ne] 3s2
Iye ẹ̀lẹ́ktrọ́nù lórí ìpele kọ̀ọ̀kan	2, 8, 2
Àwọn ohun ìní ara
Ìfarahàn at STP	solid
Ìgbà ìyọ́	923 K ​(650 °C, ​1202 °F)
Ígbà ìhó	1363 K ​(1091 °C, ​1994 °F)
Kíki (near r.t.)	1.738 g/cm3
when liquid (at m.p.)	1.584 g/cm3
Heat of fusion	8.48 kJ/mol
Heat of	128 kJ/mol
Molar heat capacity	24.869 J/(mol·K)
pressure P (Pa) 1 10 100 1 k 10 k 100 k at T (K) 701 773 861 971 1132 1361
Atomic properties
Oxidation states	+1, +2 Àdàkọ:Infobox element/symbol-to-oxidation-state/comment
Electronegativity	Pauling scale: 1.31
energies	(more)
Atomic radius	empirical: 160 pm
Covalent radius	141±7 pm
Van der Waals radius	173 pm
Color lines in a spectral range Spectral lines of magnésíọ̀mù
Other properties
Natural occurrence	primordial
Crystal structure	​hexagonal close-packed (hcp)
Speed of sound thin rod	(annealed) 4940 m/s (at r.t.)
Thermal expansion	24.8 µm/(m·K) (at 25 °C)
Thermal conductivity	156 W/(m·K)
Electrical resistivity	43.9 n Ω·m (at 20 °C)
Magnetic ordering	paramagnetic
Young's modulus	45 GPa
Shear modulus	17 GPa
Bulk modulus	45 GPa
Poisson ratio	0.290
Mohs hardness	2.5
Brinell hardness	260 MPa
CAS Number	7439-95-4
History
Discovery	Joseph Black (1755)
First isolation	Humphry Davy (1808)
Main isotopes of magnésíọ̀mù
Iso­tope Abun­dance Half-life (t1/2) Decay mode Pro­duct 24Mg 78.99% 24Mg is stable with 12 neutrons 25Mg 10.00% 25Mg is stable with 13 neutrons 26Mg 11.01% 26Mg is stable with 14 neutrons

References

This reference list does not appear in the article.