Magnesium
12
Mg
Groep
2
Periode
3
Blok
s
Protrone
Elektrone
Neutrone
12
12
12
Algemene Eienskappe
Atoom Nommer
12
Atoommassa
24,305
Massa Nommer
24
Kategorie
Aardalkalimetale
Kleur
Silver
Radioaktief
Nee
From Magnesia, district in Thessaly
Kristalstruktuur
Eenvoudige seshoekige
Geskiendenis
Scottish chemist Joseph Black recognized magnesium as an element in 1755.
Magnesium was first isolated by Sir Humphry Davy in 1808, in London.
He used electrolysis on a mixture of magnesia and mercuric oxide.
Antoine Bussy prepared it in coherent form in 1831.
Magnesium was first isolated by Sir Humphry Davy in 1808, in London.
He used electrolysis on a mixture of magnesia and mercuric oxide.
Antoine Bussy prepared it in coherent form in 1831.
Elektrone per skil
2, 8, 2
Elektronkonfigurasie
[Ne] 3s2
When it burns in air, magnesium produces a brilliant white light
Fisiese Eienskappe
Fase
Soliede
Digtheid
1,738 g/cm3
Smeltpunt
923,15 K | 650 °C | 1202 °F
Kookpunt
1363,15 K | 1090 °C | 1994 °F
Heat of Fusion
8,7 kJ/mol
Heat of Vaporization
128 kJ/mol
Spesifieke Hitte Kapasiteit
1,023 J/g·K
Oorvloed in die aardkors
2,9%
Oorvloed in die heelal
0,06%
CAS Nommer
7439-95-4
PubChem CID Nommer
5462224
Atomiese Eienskappe
Atoom radius
160 pm
Kovalente Radius
141 pm
Elektronegatiewiteit
1,31 (Pauling scale)
Ionisasie potensiaal
7,6462 eV
Atoom volume
13,97 cm3/mol
Termiese geleidingsvermoë
1,56 W/cm·K
Oksidasiestate
1, 2
Toepassings
Magnesium is widely used in the manufacturing of mobile phones, laptop computers, cameras, and other electronic components.
The brilliant light it produces when ignited is made use of in photography, flares, pyrotechnics and incendiary bombs.
Magnesium compounds such as the hydroxide (milk of magnesia), sulfate (Epsom salts), chloride and citrate are used for medicinal purposes.
The brilliant light it produces when ignited is made use of in photography, flares, pyrotechnics and incendiary bombs.
Magnesium compounds such as the hydroxide (milk of magnesia), sulfate (Epsom salts), chloride and citrate are used for medicinal purposes.
Because serious fires can occur, great care should be taken in handling magnesium metal
Isotope
Stabiele Isotope
24Mg, 25Mg, 26MgOnstabiele Isotope
19Mg, 20Mg, 21Mg, 22Mg, 23Mg, 27Mg, 28Mg, 29Mg, 30Mg, 31Mg, 32Mg, 33Mg, 34Mg, 35Mg, 36Mg, 37Mg, 38Mg, 39Mg, 40Mg