manganese vs magnesium vs calcium

manganese (chemical element) | magnesium (chemical element) | calcium (chemical element)

Periodic table location

Images

| manganese | magnesium | calcium atomic symbol | Mn | Mg | Ca atomic number | 25 | 12 | 20 short electronic configuration | [Ar]4s^23d^5 | [Ne]3s^2 | [Ar]4s^2 Aufbau diagram | 3d 4s | 3s | 4s block | d | s | s group | 7 | 2 | 2 period | 4 | 3 | 4 atomic mass | 54.938044 u | 24.305 u | 40.078 u half-life | (stable) | (stable) | (stable)

| manganese | magnesium | calcium phase at STP | solid | solid | solid melting point | 1246 °C | 650 °C | 842 °C boiling point | 2061 °C | 1090 °C | 1484 °C molar heat of fusion | 13.2 kJ/mol | 8.7 kJ/mol | 8.54 kJ/mol molar heat of vaporization | 220 kJ/mol | 128 kJ/mol | 155 kJ/mol specific heat at STP | 479 J/(kg K) | 1020 J/(kg K) | 631 J/(kg K) Néel point | 100 K | | (properties at standard conditions)

| manganese | magnesium | calcium density | 7.47 g/cm^3 | 1.738 g/cm^3 | 1.55 g/cm^3 liquid density | 5.95 g/cm^3 | 1.584 g/cm^3 | 1.378 g/cm^3 molar volume | 7.354 cm^3/mol | 13.98 cm^3/mol | 25.86 cm^3/mol Mohs hardness | 6 (≈ microcline) | 2.5 (between gypsum and calcite) | 1.75 (between gypsum and talc) Brinell hardness | 196 MPa | 260 MPa | 167 MPa bulk modulus | 120 GPa | 45 GPa | 17 GPa shear modulus | | 17 GPa | 7.4 GPa Young's modulus | 198 GPa | 45 GPa | 20 GPa Poisson ratio | | 0.29 | 0.31 tensile yield strength | 241 MPa | | ultimate tensile strength | 496 MPa | | sound speed | 5150 m/s | 4602 m/s | 3810 m/s thermal expansion | 2.17×10^-5 K^(-1) | 2.5×10^-5 K^(-1) | 2.23×10^-5 K^(-1) thermal conductivity | 7.8 W/(m K) | 160 W/(m K) | 200 W/(m K) (properties at standard conditions)

| manganese | magnesium | calcium electrical type | conductor | conductor | conductor resistivity | 1.6×10^-6 Ω m (ohm meters) | 4.4×10^-8 Ω m (ohm meters) | 3.4×10^-8 Ω m (ohm meters) electrical conductivity | 620000 S/m (siemens per meter) | 2.3×10^7 S/m (siemens per meter) | 2.9×10^7 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic | paramagnetic volume magnetic susceptibility | 9.0387×10^-4 | 1.2×10^-5 | 2.139×10^-5 mass magnetic susceptibility | 1.21×10^-7 m^3/kg (cubic meters per kilogram) | 6.9×10^-9 m^3/kg (cubic meters per kilogram) | 1.38×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 6.6475×10^-9 m^3/mol (cubic meters per mole) | 1.68×10^-10 m^3/mol (cubic meters per mole) | 5.531×10^-10 m^3/mol (cubic meters per mole) Néel point | 100 K (kelvins) | | work function | 4.1 eV (Polycrystalline) | 3.66 eV (Polycrystalline) | 2.87 eV (Polycrystalline) threshold frequency | 9.914×10^14 Hz (hertz) | 8.85×10^14 Hz (hertz) | 6.94×10^14 Hz (hertz) color | (silver) | (silver) | (silver)