Magnesyo

Magnesium
12Mg
Be ↑ Mg ↓ Ca Periodic table sodium ← magnesium → aluminium
Panagway
shiny grey solid Spectral lines of Magnesium
Kinatibuk-ang mga kinaiya
Ngalan, simbolo, kaiphan	magnesium, Mg, 12
Paglitok	/mæɡˈniːziəm/ [[Help:Pronunciation respelling key|mag-Plantilya:Smallcaps all-zee-əm]]
Kategoriyang elemento	alkaline earth metal
Group, period, block	2, 3, s
Gibug-aton sa atomo	24.3050(6)
Kontorno sa elektron	[Ne] 3s2 2, 8, 2 Electron shells of magnesium (2, 8, 2)
History
Pagkadiskobre	Joseph Black (1755)
First isolation	Humphry Davy (1808)
Physical properties
Phase	solid
Density (near r.t.)	1.738 g·cm−3
Liquid density at m.p.	1.584 g·cm−3
Melting point	923 K, 650 °C, 1202 °F
Boiling point	1363 K, 1091 °C, 1994 °F
Heat of fusion	8.48 kJ·mol−1
Heat of vaporization	128 kJ·mol−1
Molar heat capacity	24.869 J·mol−1·K−1
Vapor 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	2, 1 (strongly basic oxide)
Electronegativity	1.31 (Pauling scale)
Ionization energies (more)	1st: 737.7 kJ·mol−1
2nd: 1450.7 kJ·mol−1
3rd: 7732.7 kJ·mol−1
Atomic radius	160 pm
Covalent radius	141±7 pm
Van der Waals radius	173 pm
Miscellanea
Crystal structure	hexagonal close-packed
Magnetic ordering	paramagnetic
Electrical resistivity	(20 °C) 43.9 nΩ·m
Thermal conductivity	156 W·m−1·K−1
Thermal expansion	(25 °C) 24.8 µm·m−1·K−1
Speed of sound (thin rod)	(r.t.) (annealed) 4940 m·s−1
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 registry number	7439-95-4
Most stable isotopes
Main article: Isotopes of magnesium
iso NA half-life DM DE (MeV) DP 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

Ang magnesyo ay ang elementong kimiko nga naa sa periodic table na may simbolo kimiko na Mg og atomic number nga 12. Ang magnesyum ay ang ika-otso nga pinakadaghan sa kalibutan