Magnesium
12
Mg
Ryhmä
2
Jakso
3
Lohko
s
Protonia
Elektronit
Neutronia
12
12
12
Yleiset ominaisuudet
Järjestysluku
12
Atomipaino
24,305
Massaluku
24
Luokka
Maa-alkalimetallit
Väri
Hopea
Radioaktiivisuus
Ei
From Magnesia, district in Thessaly
Kiderakenne
Yksinkertainen kuusikulmainen
Historia
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.
Elektroneja elektronikuorilla
2, 8, 2
Orbitaalirakenne
[Ne] 3s2
When it burns in air, magnesium produces a brilliant white light
Fyysiset ominaisuudet
Olomuoto
Kiinteä
Tiheys
1,738 g/cm3
Sulamispiste
923,15 K | 650 °C | 1202 °F
Kiehumispiste
1363,15 K | 1090 °C | 1994 °F
Sulamislämpö
8,7 kJ/mol
Höyrystymislämpö
128 kJ/mol
Ominaislämpökapasiteetti
1,023 J/g·K
Esiintyvyys maankuoressa
2,9%
Esiintyvyys maailmankaikkeudessa
0,06%
CAS-numero
7439-95-4
PubChem CID-numero
5462224
Atomiominaisuudet
Atomisäde
160 pm
Kovalenttisäde
141 pm
Elektronegatiivisuus
1,31 (Paulingin asteikko)
Ionisoitumispotentiaali
7,6462 eV
Moolitilavuus
13,97 cm3/mol
Lämmönjohtavuus
1,56 W/cm·K
Hapetusluvut
1, 2
Käyttö
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
Isotooppi
Vakaat isotoopit
24Mg, 25Mg, 26MgEpävakaat isotoopit
19Mg, 20Mg, 21Mg, 22Mg, 23Mg, 27Mg, 28Mg, 29Mg, 30Mg, 31Mg, 32Mg, 33Mg, 34Mg, 35Mg, 36Mg, 37Mg, 38Mg, 39Mg, 40Mg