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astatine vs iodine vs osmium

Input interpretation

astatine (chemical element) | iodine (chemical element) | osmium (chemical element)
astatine (chemical element) | iodine (chemical element) | osmium (chemical element)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

| astatine | iodine | osmium atomic symbol | At | I | Os atomic number | 85 | 53 | 76 short electronic configuration | [Xe]6s^24f^145d^106p^5 | [Kr]5s^24d^105p^5 | [Xe]6s^24f^145d^6 Aufbau diagram | 6p 5d 4f 6s | 5p 4d 5s | 5d 4f 6s block | p | p | d group | 17 | 17 | 8 period | 6 | 5 | 6 atomic mass | 210 u | 126.90447 u | 190.23 u half-life | 8.1 h | (stable) | (stable)
| astatine | iodine | osmium atomic symbol | At | I | Os atomic number | 85 | 53 | 76 short electronic configuration | [Xe]6s^24f^145d^106p^5 | [Kr]5s^24d^105p^5 | [Xe]6s^24f^145d^6 Aufbau diagram | 6p 5d 4f 6s | 5p 4d 5s | 5d 4f 6s block | p | p | d group | 17 | 17 | 8 period | 6 | 5 | 6 atomic mass | 210 u | 126.90447 u | 190.23 u half-life | 8.1 h | (stable) | (stable)

Thermodynamic properties

| astatine | iodine | osmium phase at STP | solid | solid | solid melting point | 302 °C | 113.7 °C | 3033 °C boiling point | | 184.3 °C | 5012 °C critical temperature | | 819 K | critical pressure | | 11.7 MPa | molar heat of fusion | 6 kJ/mol | 7.76 kJ/mol | 31 kJ/mol molar heat of vaporization | 40 kJ/mol | 20.9 kJ/mol | 630 kJ/mol specific heat at STP | | 429 J/(kg K) | 130 J/(kg K) (properties at standard conditions)
| astatine | iodine | osmium phase at STP | solid | solid | solid melting point | 302 °C | 113.7 °C | 3033 °C boiling point | | 184.3 °C | 5012 °C critical temperature | | 819 K | critical pressure | | 11.7 MPa | molar heat of fusion | 6 kJ/mol | 7.76 kJ/mol | 31 kJ/mol molar heat of vaporization | 40 kJ/mol | 20.9 kJ/mol | 630 kJ/mol specific heat at STP | | 429 J/(kg K) | 130 J/(kg K) (properties at standard conditions)

Material properties

| astatine | iodine | osmium density | | 4.94 g/cm^3 | 22.59 g/cm^3 liquid density | | | 20 g/cm^3 molar volume | | 25.69 cm^3/mol | 8.421 cm^3/mol Mohs hardness | | | 7 (≈ quartz) Vickers hardness | | | 4140 MPa Brinell hardness | | | 3920 MPa bulk modulus | | 7.7 GPa | shear modulus | | | 222 GPa Poisson ratio | | | 0.25 sound speed | | | 4940 m/s thermal expansion | | | 5.1×10^-6 K^(-1) thermal conductivity | 2 W/(m K) | 0.449 W/(m K) | 88 W/(m K) (properties at standard conditions)
| astatine | iodine | osmium density | | 4.94 g/cm^3 | 22.59 g/cm^3 liquid density | | | 20 g/cm^3 molar volume | | 25.69 cm^3/mol | 8.421 cm^3/mol Mohs hardness | | | 7 (≈ quartz) Vickers hardness | | | 4140 MPa Brinell hardness | | | 3920 MPa bulk modulus | | 7.7 GPa | shear modulus | | | 222 GPa Poisson ratio | | | 0.25 sound speed | | | 4940 m/s thermal expansion | | | 5.1×10^-6 K^(-1) thermal conductivity | 2 W/(m K) | 0.449 W/(m K) | 88 W/(m K) (properties at standard conditions)

Electromagnetic properties

| astatine | iodine | osmium electrical type | | insulator | conductor resistivity | | 1×10^7 Ω m (ohm meters) | 8.1×10^-8 Ω m (ohm meters) electrical conductivity | | 1×10^-7 S/m (siemens per meter) | 1.2×10^7 S/m (siemens per meter) magnetic type | | diamagnetic | paramagnetic volume magnetic susceptibility | | -2.22×10^-5 | 1.4×10^-5 mass magnetic susceptibility | | -4.5×10^-9 m^3/kg (cubic meters per kilogram) | 6×10^-10 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | | -1.14×10^-9 m^3/mol (cubic meters per mole) | 1.1×10^-10 m^3/mol (cubic meters per mole) work function | | | 5.93 eV (Polycrystalline) threshold frequency | | | 1.434×10^15 Hz (hertz) superconducting point | | | 0.66 K (kelvins) color | (silver) | (slate gray) | (slate gray)
| astatine | iodine | osmium electrical type | | insulator | conductor resistivity | | 1×10^7 Ω m (ohm meters) | 8.1×10^-8 Ω m (ohm meters) electrical conductivity | | 1×10^-7 S/m (siemens per meter) | 1.2×10^7 S/m (siemens per meter) magnetic type | | diamagnetic | paramagnetic volume magnetic susceptibility | | -2.22×10^-5 | 1.4×10^-5 mass magnetic susceptibility | | -4.5×10^-9 m^3/kg (cubic meters per kilogram) | 6×10^-10 m^3/kg (cubic meters per kilogram) molar magnetic susceptibility | | -1.14×10^-9 m^3/mol (cubic meters per mole) | 1.1×10^-10 m^3/mol (cubic meters per mole) work function | | | 5.93 eV (Polycrystalline) threshold frequency | | | 1.434×10^15 Hz (hertz) superconducting point | | | 0.66 K (kelvins) color | (silver) | (slate gray) | (slate gray)

Reactivity

| astatine | iodine | osmium valence | 7 | 7 | 6 electronegativity | 2.2 | 2.66 | 2.2 electron affinity | 270.1 kJ/mol (kilojoules per mole) | 295.2 kJ/mol (kilojoules per mole) | 106.1 kJ/mol (kilojoules per mole) first ionization energy | 920 kJ/mol (kilojoules per mole) | 1008.4 kJ/mol (kilojoules per mole) | 840 kJ/mol (kilojoules per mole) ionization energies | 920 kJ/mol | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol | 840 kJ/mol | 1600 kJ/mol
| astatine | iodine | osmium valence | 7 | 7 | 6 electronegativity | 2.2 | 2.66 | 2.2 electron affinity | 270.1 kJ/mol (kilojoules per mole) | 295.2 kJ/mol (kilojoules per mole) | 106.1 kJ/mol (kilojoules per mole) first ionization energy | 920 kJ/mol (kilojoules per mole) | 1008.4 kJ/mol (kilojoules per mole) | 840 kJ/mol (kilojoules per mole) ionization energies | 920 kJ/mol | 1008.4 kJ/mol | 1845.9 kJ/mol | 3180 kJ/mol | 840 kJ/mol | 1600 kJ/mol
Reactivity
Reactivity

Atomic properties

| astatine | iodine | osmium term symbol | ^2P_(3/2) | ^2P_(3/2) | ^5D_4 atomic radius | 127 pm | 140 pm | 130 pm covalent radius | 150 pm | 139 pm | 144 pm van der Waals radius | | 198 pm | (electronic ground state properties)
| astatine | iodine | osmium term symbol | ^2P_(3/2) | ^2P_(3/2) | ^5D_4 atomic radius | 127 pm | 140 pm | 130 pm covalent radius | 150 pm | 139 pm | 144 pm van der Waals radius | | 198 pm | (electronic ground state properties)

Abundances

| astatine | iodine | osmium universe abundance | | 1×10^-7 mass% | 3×10^-7 mass% solar abundance | | | 2×10^-7 mass% meteorite abundance | 0 mass% | 2.5×10^-5 mass% | 6.6×10^-5 mass% crust abundance | 0 mass% | 4.9×10^-5 mass% | 1.8×10^-7 mass% ocean abundance | 0 mass% | 6×10^-6 mass% | human abundance | 0 mass% | 2×10^-5 mass% | universe molar abundance | | 1×10^-9 mol% | 2×10^-9 mol% solar molar abundance | | | 2×10^-9 mol% meteorite molar abundance | 0 mol% | 3×10^-6 mol% | 7×10^-6 mol% ocean molar abundance | 0 mol% | 2.9×10^-7 mol% | crust molar abundance | 0 mol% | 8×10^-6 mol% | 2×10^-8 mol% human molar abundance | 0 mol% | 1×10^-6 mol% |
| astatine | iodine | osmium universe abundance | | 1×10^-7 mass% | 3×10^-7 mass% solar abundance | | | 2×10^-7 mass% meteorite abundance | 0 mass% | 2.5×10^-5 mass% | 6.6×10^-5 mass% crust abundance | 0 mass% | 4.9×10^-5 mass% | 1.8×10^-7 mass% ocean abundance | 0 mass% | 6×10^-6 mass% | human abundance | 0 mass% | 2×10^-5 mass% | universe molar abundance | | 1×10^-9 mol% | 2×10^-9 mol% solar molar abundance | | | 2×10^-9 mol% meteorite molar abundance | 0 mol% | 3×10^-6 mol% | 7×10^-6 mol% ocean molar abundance | 0 mol% | 2.9×10^-7 mol% | crust molar abundance | 0 mol% | 8×10^-6 mol% | 2×10^-8 mol% human molar abundance | 0 mol% | 1×10^-6 mol% |

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