Latin name:
Magnesium
English name:
Magnesium
Year discovered:
1808
CAS Number:
CAS7439-95-4
Discovered by:
Joseph Black
Humphry Davy
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Electron shell:
K2 L8 M2 N0 O0 P0 Q0 R0
Electrons:12
Protons:12
Neutrons:12
Atomic number:
12
Atomic weight (Relative atomic mass):
24.3050(g/mol)
Density:
1.738 (g/cm³) (g/cm³)
Melting point:
650.0°C = 1202.0°F = 923.15K
Boiling point:
1090.0°C = 1994.0°F = 1363.15K
Phase:
Solid
Valence:
II
Period:
3
Group:
IIA
Block:
s - block
Electron configuration:
[Ne]3s2
1s2 2s2 2p6 3s2
Oxidation states:
+1,+2
Ion charge:
Mg2+
The ionisation potential of an atom:
7.61 (eV)
Atomic radius:
160 (pm)
Covalent radius:
130 (pm)
Van der Waals radius:
173 (pm)
Electronegativity:
1.31
Valence:
II
Electron affinity:
0 (kJ/mole)
Electrical conductivity:
2.3 ⋅ 107 (S/m)
Electrical type:
Conductor
Magnetic type:
Paramagnetism
Volume magnetic susceptibility:
0.000012
Mass magnetic susceptibility:
0.0000000069
Molar magnetic susceptibility:
1.68 ⋅ 10-10 (m³/mol)
Resistivity:
4.4 ⋅ 10-8 (mΩ)
Crystal structure:
Hexagonal close-packed
Grid parameters:
a=0.32029 Ã…; c=0.52000 Ã…
Attitude c/a :
1.624
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