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radium vs francium vs polonium

Input interpretation

radium (chemical element) | francium (chemical element) | polonium (chemical element)
radium (chemical element) | francium (chemical element) | polonium (chemical element)

Periodic table location

Periodic table location
Periodic table location

Images

Images
Images

Basic elemental properties

| radium | francium | polonium atomic symbol | Ra | Fr | Po atomic number | 88 | 87 | 84 short electronic configuration | [Rn]7s^2 | [Rn]7s^1 | [Xe]6s^24f^145d^106p^4 Aufbau diagram | 7s | 7s | 6p 5d 4f 6s block | s | s | p group | 2 | 1 | 16 period | 7 | 7 | 6 atomic mass | 226 u | 223 u | 209 u half-life | 1600 yr | 22 min | 102 yr
| radium | francium | polonium atomic symbol | Ra | Fr | Po atomic number | 88 | 87 | 84 short electronic configuration | [Rn]7s^2 | [Rn]7s^1 | [Xe]6s^24f^145d^106p^4 Aufbau diagram | 7s | 7s | 6p 5d 4f 6s block | s | s | p group | 2 | 1 | 16 period | 7 | 7 | 6 atomic mass | 226 u | 223 u | 209 u half-life | 1600 yr | 22 min | 102 yr

Thermodynamic properties

| radium | francium | polonium phase at STP | solid | solid | solid melting point | 700 °C | | 254 °C boiling point | 1737 °C | | 962 °C molar heat of fusion | 8 kJ/mol | 2 kJ/mol | 13 kJ/mol molar heat of vaporization | 125 kJ/mol | 65 kJ/mol | 100 kJ/mol specific heat at STP | 92 J/(kg K) | | (properties at standard conditions)
| radium | francium | polonium phase at STP | solid | solid | solid melting point | 700 °C | | 254 °C boiling point | 1737 °C | | 962 °C molar heat of fusion | 8 kJ/mol | 2 kJ/mol | 13 kJ/mol molar heat of vaporization | 125 kJ/mol | 65 kJ/mol | 100 kJ/mol specific heat at STP | 92 J/(kg K) | | (properties at standard conditions)

Material properties

| radium | polonium density | 5 g/cm^3 | 9.196 g/cm^3 molar volume | 45 cm^3/mol | 22.7 cm^3/mol thermal conductivity | 19 W/(m K) | (properties at standard conditions)
| radium | polonium density | 5 g/cm^3 | 9.196 g/cm^3 molar volume | 45 cm^3/mol | 22.7 cm^3/mol thermal conductivity | 19 W/(m K) | (properties at standard conditions)

Electromagnetic properties

| radium | francium | polonium electrical type | conductor | | conductor resistivity | 1×10^-6 Ω m (ohm meters) | | 4.3×10^-7 Ω m (ohm meters) electrical conductivity | 1×10^6 S/m (siemens per meter) | | 2.3×10^6 S/m (siemens per meter) color | (silver) | (silver) | (silver)
| radium | francium | polonium electrical type | conductor | | conductor resistivity | 1×10^-6 Ω m (ohm meters) | | 4.3×10^-7 Ω m (ohm meters) electrical conductivity | 1×10^6 S/m (siemens per meter) | | 2.3×10^6 S/m (siemens per meter) color | (silver) | (silver) | (silver)

Reactivity

| radium | francium | polonium valence | 2 | 1 | 6 electronegativity | 0.9 | 0.7 | 2 electron affinity | | | 183.3 kJ/mol (kilojoules per mole) first ionization energy | 509.3 kJ/mol (kilojoules per mole) | 380 kJ/mol (kilojoules per mole) | 812.1 kJ/mol (kilojoules per mole) ionization energies | 509.3 kJ/mol | 979 kJ/mol | 380 kJ/mol | 812.1 kJ/mol
| radium | francium | polonium valence | 2 | 1 | 6 electronegativity | 0.9 | 0.7 | 2 electron affinity | | | 183.3 kJ/mol (kilojoules per mole) first ionization energy | 509.3 kJ/mol (kilojoules per mole) | 380 kJ/mol (kilojoules per mole) | 812.1 kJ/mol (kilojoules per mole) ionization energies | 509.3 kJ/mol | 979 kJ/mol | 380 kJ/mol | 812.1 kJ/mol
Reactivity
Reactivity

Atomic properties

| radium | francium | polonium term symbol | ^1S_0 | ^2S_(1/2) | ^3P_2 atomic radius | 215 pm | | 190 pm covalent radius | 221 pm | 260 pm | 140 pm (electronic ground state properties)
| radium | francium | polonium term symbol | ^1S_0 | ^2S_(1/2) | ^3P_2 atomic radius | 215 pm | | 190 pm covalent radius | 221 pm | 260 pm | 140 pm (electronic ground state properties)

Abundances

| radium | francium | polonium crust abundance | 9.9×10^-12 mass% | | ocean abundance | 1×10^-15 mass% | | 2×10^-18 mass% human abundance | 1×10^-13 mass% | 0 mass% | 0 mass% ocean molar abundance | 3×10^-6 mol% | | 6×10^-6 mol% crust molar abundance | 9.9×10^-13 mol% | | human molar abundance | 3×10^-6 mol% | 0 mol% | 0 mol%
| radium | francium | polonium crust abundance | 9.9×10^-12 mass% | | ocean abundance | 1×10^-15 mass% | | 2×10^-18 mass% human abundance | 1×10^-13 mass% | 0 mass% | 0 mass% ocean molar abundance | 3×10^-6 mol% | | 6×10^-6 mol% crust molar abundance | 9.9×10^-13 mol% | | human molar abundance | 3×10^-6 mol% | 0 mol% | 0 mol%

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