Magnesium
12
Mg
Kumpulan
2
Kala
3
Blok
s
Proton
Elektron
Neutron
12
12
12
Ciri-Ciri Am
Nombor atom
12
Berat atom
24.305
Nombor jisim
24
Kategori
Logam alkali bumi
Warna
Perak
Radioaktif
Tidak
From Magnesia, district in Thessaly
Struktur hablur
Hexagonal Ringkas
Sejarah
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.
Bilangan elektron per petala
2, 8, 2
Konfigurasi elektron
[Ne] 3s2
When it burns in air, magnesium produces a brilliant white light
Ciri-Ciri Fizikal
Fasa
Pepejal
Ketumpatan
1.738 g/cm3
Takat lebur
923.15 K | 650 °C | 1202 °F
Takat didih
1363.15 K | 1090 °C | 1994 °F
Haba pelakuran
8.7 kJ/mol
Haba pengewapan
128 kJ/mol
Muatan haba molar
1.023 J/g·K
Banyak pada kerak bumi
2.9%
Banyak pada alam semesta
0.06%
Nombor CAS
7439-95-4
Nombor PubChem CID
5462224
Ciri-Ciri Atom
Jejari atom
160 pm
Jejari kovalen
141 pm
Keelektronegatifan
1.31 (Skala Pauling)
Kebolehan mengion
7.6462 eV
Isipadu atom
13.97 cm3/mol
Daya pengaliran terma
1.56 W/cm·K
Keadaan pengoksidaan
1, 2
Aplikasi
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
Isotop
Isotop stabil
24Mg, 25Mg, 26MgIsotop tidak stabil
19Mg, 20Mg, 21Mg, 22Mg, 23Mg, 27Mg, 28Mg, 29Mg, 30Mg, 31Mg, 32Mg, 33Mg, 34Mg, 35Mg, 36Mg, 37Mg, 38Mg, 39Mg, 40Mg