Magnésium, 12 Mg Pabaosan (mag-NEE -zee-əm ) Cingakan klau nyalang padet Bobot atom standar A r, std (Mg) [7001243040000000000♠ 24.304 , 7001243070000000000♠ 24.307 ] konvénsional: 7001243050000000000♠ 24.305
Wilangan atom (Z ) 12 Watek golongan 2 (logam alkali tanah) Période période 3 Blok blok-s Konpigurasi éléktron [Né ] 3s2 Éléktron per kulit 2, 8, 2 Pase ring STP padet Titik lebur 923 K (650 °C, 1202 °F) Titik didih 1363 K (1091 °C, 1994 °F) Kapadetan (nampek s.r. ) 1.738 g/cm3 ri kala éncéh (ring t.l. ) 1.584 g/cm3 Panes fusi 8.48 kJ/mol Panes panguapan 128 kJ/mol Kapasitas panes molar 24.869[ 1] J/(mol·K) Tekanan uap
P (Pa)
1
10
100
1 k
10 k
100 k
at T (K)
701
773
861
971
1132
1361
Paindikan oksidasi 0,[ 2] +1,[ 3] +2 (oksida basa kuat) Kaéléktronégatipan skala Pauling: 1.31 Wasa ionisasi ka-1: 737.7 kJ/mol ka-2: 1450.7 kJ/mol ka-3: 7732.7 kJ/mol (malih ) Jeriji atom émpiris: 160 pm Jeriji kovalén 141±7 pm Jeriji Van der Waals 173 pm Garis spéktral saking magnésiumRupa alami primordial Struktur kristal susunan padat héksagon (hcp) Kagelisan swara pales tipis 4940 m/s (ring r.t. ) (annealed) Ékspansi térmal 24.8[ 4] µm/(m⋅K) (ring 25 °C) Konduktivitas térmal 156[ 5] W/(m⋅K) Resistivitas listrik 43.9[ 6] nΩ⋅m (ring 20 °C) bacakan magnétik paramagnétik Karentanan magnétik molar 6995130999999999999♠ +13.1× 10−6 cm3 /mol (298 K)[ 7] Modulus Young 45 GPa Modulus Shear 17 GPa Modulus Bulk 35.4[ 8] GPa Rasio Poisson 0.290 Kakatosan Mohs 1–2.5 Kakatosan Brinell 44–260 MPa Nomor CAS 7439-95-4 Pangaranan mawit Magnésia , Yunani[ 9] Panemuan Joseph Black (1755[ 9] ) Isolasi kapertama Humphry Davy (1808[ 9] )
Kategori:Magnésium | pustaka
Mg:
ring
itung saking C
bina
parihindik
pus
C
650
—
—
K
923
923
0
F
1202
1202
0
présisi maks
0
WD
649 649 Celsius
[ 10]
dagingan
C: 650, K: 923, F: 1202
pabligbagan
Mg:
ring
itung saking C
bina
parihindik
pus
C
1091
—
—
K
1363
1364
-1
delta
F
1994
1996
-2
delta
présisi maks
0
WD
1.100 1.100 Celsius
[ 10]
dagingan
C: 1091, K: 1363, F: 1994
pabligbagan
Pustaka
Pustaka pacang tampil ring suratan, menawi lis puniki wantah tampil ring kaca puniki.
↑ Rumble, p. 4.61
↑ Mg(0) has been synthesized in a compound containing a Na2 Mg2 2+ cluster coordinated to a bulky organic ligand; see Rösch, B.; Gentner, T. X.; Eyselein, J.; Langer, J.; Elsen, H.; Li, W.; Harder, S. (2021). "Strongly reducing magnesium(0) complexes". Nature . 592 (7856): 717–721. Bibcode :2021Natur.592..717R . doi :10.1038/s41586-021-03401-w . PMID 33911274 . S2CID 233447380
↑ Bernath, P. F.; Black, J. H.; Brault, J. W. (1985). "The spectrum of magnesium hydride" (PDF) . Astrophysical Journal . 298 : 375. Bibcode :1985ApJ...298..375B . doi :10.1086/163620 . . See also Low valent magnesium compounds .
↑ Rumble, p. 12.135
↑ Rumble, p. 12.137
↑ Rumble, p. 12.28
↑ Rumble, p. 4.70
↑ Gschneider, K. A. (1964). Physical Properties and Interrelationships of Metallic and Semimetallic Elements . Solid State Physics. 16 . p. 308. doi :10.1016/S0081-1947(08)60518-4 . ISBN 9780126077162 .
↑ 9,0 9,1 9,2 Rumble, p. 4.19
↑ 10,0 10,1 "MAGNESIUM (POWDER)".
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