Magnezij
12
Mg
Skupina
2
Perioda
3
Blok
s
Protoni
Elektroni
Nevtroni
12
12
12
Splošne lastnosti
Vrstno število
12
Atomska teža
24,305
Masno število
24
Kategorija
Zemljoalkalijske kovine
Barva
Srebrna
Radioaktivno
Ne
From Magnesia, district in Thessaly
Kristalna struktura
Heksagonalna
Zgodovina
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.
Elektroni po lupinah
2, 8, 2
Razporeditev elektronov
[Ne] 3s2
When it burns in air, magnesium produces a brilliant white light
Fizikalne lastnosti
Faza snovi
Trdnina
Gostota
1,738 g/cm3
Tališče
923,15 K | 650 °C | 1202 °F
Vrelišče
1363,15 K | 1090 °C | 1994 °F
Talilna toplota
8,7 kJ/mol
Izparilna toplota
128 kJ/mol
Toplotna kapaciteta
1,023 J/g·K
Zastopanost v Zemljini skorji
2,9%
Zastopanost v vesolju
0,06%
CAS številka
7439-95-4
PubChem CID številka
5462224
Atomske lastnosti
Atomski polmer
160 pm
Kovalentni polmer
141 pm
Elektronegativnost
1,31 (Paulingova lestvica)
Ionizacijski potencial
7,6462 eV
Atomski volumen
13,97 cm3/mol
Toplotna prevodnost
1,56 W/cm·K
Oksidacijska stanja
1, 2
Uporabe
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
Izotopi
Stabilni izotopi
24Mg, 25Mg, 26MgNestabilni izotopi
19Mg, 20Mg, 21Mg, 22Mg, 23Mg, 27Mg, 28Mg, 29Mg, 30Mg, 31Mg, 32Mg, 33Mg, 34Mg, 35Mg, 36Mg, 37Mg, 38Mg, 39Mg, 40Mg