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strontium vs sodium vs calcium

Input interpretation

strontium (chemical element) | sodium (chemical element) | calcium (chemical element)
strontium (chemical element) | sodium (chemical element) | calcium (chemical element)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

| strontium | sodium | calcium atomic symbol | Sr | Na | Ca atomic number | 38 | 11 | 20 short electronic configuration | [Kr]5s^2 | [Ne]3s^1 | [Ar]4s^2 Aufbau diagram | 5s | 3s | 4s block | s | s | s group | 2 | 1 | 2 period | 5 | 3 | 4 atomic mass | 87.62 u | 22.98976928 u | 40.078 u half-life | (stable) | (stable) | (stable)
| strontium | sodium | calcium atomic symbol | Sr | Na | Ca atomic number | 38 | 11 | 20 short electronic configuration | [Kr]5s^2 | [Ne]3s^1 | [Ar]4s^2 Aufbau diagram | 5s | 3s | 4s block | s | s | s group | 2 | 1 | 2 period | 5 | 3 | 4 atomic mass | 87.62 u | 22.98976928 u | 40.078 u half-life | (stable) | (stable) | (stable)

Thermodynamic properties

| strontium | sodium | calcium phase at STP | solid | solid | solid melting point | 777 °C | 97.72 °C | 842 °C boiling point | 1382 °C | 883 °C | 1484 °C critical temperature | | 2573 K | critical pressure | | 35 MPa | molar heat of fusion | 8 kJ/mol | 2.6 kJ/mol | 8.54 kJ/mol molar heat of vaporization | 137 kJ/mol | 97.7 kJ/mol | 155 kJ/mol specific heat at STP | 300 J/(kg K) | 1230 J/(kg K) | 631 J/(kg K) (properties at standard conditions)
| strontium | sodium | calcium phase at STP | solid | solid | solid melting point | 777 °C | 97.72 °C | 842 °C boiling point | 1382 °C | 883 °C | 1484 °C critical temperature | | 2573 K | critical pressure | | 35 MPa | molar heat of fusion | 8 kJ/mol | 2.6 kJ/mol | 8.54 kJ/mol molar heat of vaporization | 137 kJ/mol | 97.7 kJ/mol | 155 kJ/mol specific heat at STP | 300 J/(kg K) | 1230 J/(kg K) | 631 J/(kg K) (properties at standard conditions)

Material properties

| strontium | sodium | calcium density | 2.63 g/cm^3 | 0.968 g/cm^3 | 1.55 g/cm^3 liquid density | 2.375 g/cm^3 | 0.927 g/cm^3 | 1.378 g/cm^3 molar volume | 33.32 cm^3/mol | 23.7 cm^3/mol | 25.86 cm^3/mol Mohs hardness | 1.5 (between talc and gypsum) | 0.5 (between talc and gypsum) | 1.75 (between gypsum and talc) Brinell hardness | | 0.69 MPa | 167 MPa bulk modulus | | 6.3 GPa | 17 GPa shear modulus | 6.1 GPa | 3.3 GPa | 7.4 GPa Young's modulus | | 10 GPa | 20 GPa Poisson ratio | 0.28 | | 0.31 ultimate tensile strength | | 10 MPa | sound speed | | 3200 m/s | 3810 m/s thermal expansion | 2.25×10^-5 K^(-1) | 7.1×10^-5 K^(-1) | 2.23×10^-5 K^(-1) thermal conductivity | 35 W/(m K) | 140 W/(m K) | 200 W/(m K) (properties at standard conditions)
| strontium | sodium | calcium density | 2.63 g/cm^3 | 0.968 g/cm^3 | 1.55 g/cm^3 liquid density | 2.375 g/cm^3 | 0.927 g/cm^3 | 1.378 g/cm^3 molar volume | 33.32 cm^3/mol | 23.7 cm^3/mol | 25.86 cm^3/mol Mohs hardness | 1.5 (between talc and gypsum) | 0.5 (between talc and gypsum) | 1.75 (between gypsum and talc) Brinell hardness | | 0.69 MPa | 167 MPa bulk modulus | | 6.3 GPa | 17 GPa shear modulus | 6.1 GPa | 3.3 GPa | 7.4 GPa Young's modulus | | 10 GPa | 20 GPa Poisson ratio | 0.28 | | 0.31 ultimate tensile strength | | 10 MPa | sound speed | | 3200 m/s | 3810 m/s thermal expansion | 2.25×10^-5 K^(-1) | 7.1×10^-5 K^(-1) | 2.23×10^-5 K^(-1) thermal conductivity | 35 W/(m K) | 140 W/(m K) | 200 W/(m K) (properties at standard conditions)

Electromagnetic properties

| strontium | sodium | calcium electrical type | conductor | conductor | conductor resistivity | 1.3×10^-7 Ω m (ohm meters) | 4.7×10^-8 Ω m (ohm meters) | 3.4×10^-8 Ω m (ohm meters) electrical conductivity | 7.7×10^6 S/m (siemens per meter) | 2.1×10^7 S/m (siemens per meter) | 2.9×10^7 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic | paramagnetic volume magnetic susceptibility | 3.47×10^-6 | 8.5×10^-6 | 2.139×10^-5 mass magnetic susceptibility | 1.32×10^-9 m^3/kg (cubic meters per kilogram) | 8.8×10^-9 m^3/kg (cubic meters per kilogram) | 1.38×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.16×10^-10 m^3/mol (cubic meters per mole) | 2×10^-10 m^3/mol (cubic meters per mole) | 5.531×10^-10 m^3/mol (cubic meters per mole) work function | 2.59 eV (Polycrystalline) | 2.36 eV (Polycrystalline) | 2.87 eV (Polycrystalline) threshold frequency | 6.263×10^14 Hz (hertz) | 5.706×10^14 Hz (hertz) | 6.94×10^14 Hz (hertz) color | (silver) | (silver) | (silver)
| strontium | sodium | calcium electrical type | conductor | conductor | conductor resistivity | 1.3×10^-7 Ω m (ohm meters) | 4.7×10^-8 Ω m (ohm meters) | 3.4×10^-8 Ω m (ohm meters) electrical conductivity | 7.7×10^6 S/m (siemens per meter) | 2.1×10^7 S/m (siemens per meter) | 2.9×10^7 S/m (siemens per meter) magnetic type | paramagnetic | paramagnetic | paramagnetic volume magnetic susceptibility | 3.47×10^-6 | 8.5×10^-6 | 2.139×10^-5 mass magnetic susceptibility | 1.32×10^-9 m^3/kg (cubic meters per kilogram) | 8.8×10^-9 m^3/kg (cubic meters per kilogram) | 1.38×10^-8 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | 1.16×10^-10 m^3/mol (cubic meters per mole) | 2×10^-10 m^3/mol (cubic meters per mole) | 5.531×10^-10 m^3/mol (cubic meters per mole) work function | 2.59 eV (Polycrystalline) | 2.36 eV (Polycrystalline) | 2.87 eV (Polycrystalline) threshold frequency | 6.263×10^14 Hz (hertz) | 5.706×10^14 Hz (hertz) | 6.94×10^14 Hz (hertz) color | (silver) | (silver) | (silver)

Reactivity

| strontium | sodium | calcium valence | 2 | 1 | 2 electronegativity | 0.95 | 0.93 | 1 electron affinity | 5.03 kJ/mol (kilojoules per mole) | 52.8 kJ/mol (kilojoules per mole) | 2.37 kJ/mol (kilojoules per mole) first ionization energy | 549.5 kJ/mol (kilojoules per mole) | 495.8 kJ/mol (kilojoules per mole) | 589.8 kJ/mol (kilojoules per mole) ionization energies | 549.5 kJ/mol | 1064.2 kJ/mol | 4138 kJ/mol | 5500 kJ/mol | 6910 kJ/mol | 8760 kJ/mol | 10230 kJ/mol | 11800 kJ/mol | 15600 kJ/mol | 17100 kJ/mol | 495.8 kJ/mol | 4562 kJ/mol | 6910.3 kJ/mol | 9543 kJ/mol | 13354 kJ/mol | 16613 kJ/mol | 20117 kJ/mol | 25496 kJ/mol | 28932 kJ/mol | 141362 kJ/mol | 589.8 kJ/mol | 1145.4 kJ/mol | 4912.4 kJ/mol | 6491 kJ/mol | 8153 kJ/mol | 10496 kJ/mol | 12270 kJ/mol | 14206 kJ/mol | 18191 kJ/mol | 20385 kJ/mol | 57110 kJ/mol
| strontium | sodium | calcium valence | 2 | 1 | 2 electronegativity | 0.95 | 0.93 | 1 electron affinity | 5.03 kJ/mol (kilojoules per mole) | 52.8 kJ/mol (kilojoules per mole) | 2.37 kJ/mol (kilojoules per mole) first ionization energy | 549.5 kJ/mol (kilojoules per mole) | 495.8 kJ/mol (kilojoules per mole) | 589.8 kJ/mol (kilojoules per mole) ionization energies | 549.5 kJ/mol | 1064.2 kJ/mol | 4138 kJ/mol | 5500 kJ/mol | 6910 kJ/mol | 8760 kJ/mol | 10230 kJ/mol | 11800 kJ/mol | 15600 kJ/mol | 17100 kJ/mol | 495.8 kJ/mol | 4562 kJ/mol | 6910.3 kJ/mol | 9543 kJ/mol | 13354 kJ/mol | 16613 kJ/mol | 20117 kJ/mol | 25496 kJ/mol | 28932 kJ/mol | 141362 kJ/mol | 589.8 kJ/mol | 1145.4 kJ/mol | 4912.4 kJ/mol | 6491 kJ/mol | 8153 kJ/mol | 10496 kJ/mol | 12270 kJ/mol | 14206 kJ/mol | 18191 kJ/mol | 20385 kJ/mol | 57110 kJ/mol
Reactivity
Reactivity

Atomic properties

| strontium | sodium | calcium term symbol | ^1S_0 | ^2S_(1/2) | ^1S_0 atomic radius | 200 pm | 180 pm | 180 pm covalent radius | 195 pm | 166 pm | 176 pm van der Waals radius | | 227 pm | (electronic ground state properties)
| strontium | sodium | calcium term symbol | ^1S_0 | ^2S_(1/2) | ^1S_0 atomic radius | 200 pm | 180 pm | 180 pm covalent radius | 195 pm | 166 pm | 176 pm van der Waals radius | | 227 pm | (electronic ground state properties)

Abundances

| strontium | sodium | calcium universe abundance | 4×10^-6 mass% | 0.002 mass% | 0.007 mass% solar abundance | 5×10^-6 mass% | 0.004 mass% | 0.007 mass% meteorite abundance | 8.7×10^-4 mass% | 0.55 mass% | 1.1 mass% crust abundance | 0.036 mass% | 2.3 mass% | 5 mass% ocean abundance | 8.1×10^-4 mass% | 1.1 mass% | 4.2×10^-4 mass% human abundance | 4.6×10^-4 mass% | 0.14 mass% | 1.4 mass% universe molar abundance | 6×10^-8 mol% | 1×10^-4 mol% | 2×10^-4 mol% solar molar abundance | 7×10^-8 mol% | 2×10^-4 mol% | 2×10^-4 mol% meteorite molar abundance | 2×10^-4 mol% | 0.48 mol% | 0.52 mol% ocean molar abundance | 5.7×10^-5 mol% | 0.3 mol% | 6.5×10^-5 mol% crust molar abundance | 0.0085 mol% | 2.1 mol% | 2.6 mol% human molar abundance | 3.3×10^-5 mol% | 0.038 mol% | 0.22 mol%
| strontium | sodium | calcium universe abundance | 4×10^-6 mass% | 0.002 mass% | 0.007 mass% solar abundance | 5×10^-6 mass% | 0.004 mass% | 0.007 mass% meteorite abundance | 8.7×10^-4 mass% | 0.55 mass% | 1.1 mass% crust abundance | 0.036 mass% | 2.3 mass% | 5 mass% ocean abundance | 8.1×10^-4 mass% | 1.1 mass% | 4.2×10^-4 mass% human abundance | 4.6×10^-4 mass% | 0.14 mass% | 1.4 mass% universe molar abundance | 6×10^-8 mol% | 1×10^-4 mol% | 2×10^-4 mol% solar molar abundance | 7×10^-8 mol% | 2×10^-4 mol% | 2×10^-4 mol% meteorite molar abundance | 2×10^-4 mol% | 0.48 mol% | 0.52 mol% ocean molar abundance | 5.7×10^-5 mol% | 0.3 mol% | 6.5×10^-5 mol% crust molar abundance | 0.0085 mol% | 2.1 mol% | 2.6 mol% human molar abundance | 3.3×10^-5 mol% | 0.038 mol% | 0.22 mol%

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