Input interpretation
polonium (chemical element)
Periodic table location
Periodic table location
Image
Image
Basic elemental properties
![atomic symbol | Po atomic number | 84 short electronic configuration | [Xe]6s^24f^145d^106p^4 Aufbau diagram | 6p 5d 4f 6s block | p group | 16 period | 6 atomic mass | 209 u (unified atomic mass units) (atomic mass number given for longest-lived isotope) half-life | 102 years](../image_source/f4c1e8a6f15647d6a9fb537eeacb134f.png)
atomic symbol | Po atomic number | 84 short electronic configuration | [Xe]6s^24f^145d^106p^4 Aufbau diagram | 6p 5d 4f 6s block | p group | 16 period | 6 atomic mass | 209 u (unified atomic mass units) (atomic mass number given for longest-lived isotope) half-life | 102 years
Thermodynamic properties
phase at STP | solid melting point | 254 °C (rank: 77th) boiling point | 962 °C (rank: 70th) molar heat of fusion | 13 kJ/mol (rank: 38th) molar heat of vaporization | 100 kJ/mol (rank: 67th) (properties at standard conditions)
Material properties
density | 9.196 g/cm^3 (rank: 31st) molar volume | 22.7 cm^3/mol (properties at standard conditions)
Electromagnetic properties
electrical type | conductor resistivity | 4.3×10^-7 Ω m (ohm meters) electrical conductivity | 2.3×10^6 S/m (siemens per meter) color | (silver)
Reactivity
valence | 6 electronegativity | 2 electron affinity | 183.3 kJ/mol (kilojoules per mole) first ionization energy | 812.1 kJ/mol (kilojoules per mole) ionization energies | 812.1 kJ/mol
Atomic properties
term symbol | ^3P_2 atomic radius | 190 pm covalent radius | 140 pm (electronic ground state properties)
(neutral polonium atomic spectrum)
Abundances
ocean abundance | 2×10^-18 mass% (rank: 79th) human abundance | 0 mass% ocean molar abundance | 6×10^-6 mol% (rank: 20th) human molar abundance | 0 mol%
Nuclear properties
half-life | 102 yr lifetime | 147 yr (rank: 1st) specific radioactivity | 621 GBq/g decay mode | alpha emission nuclear spin | Po-188: 0^+ | Po-189: 7/2^- | Po-190: 0^+ | Po-191: 3/2^- | Po-192: 0^+ | Po-193: 3/2^- | Po-194: 0^+ | Po-195: 3/2^- | Po-196: 0^+ | Po-197: 3/2^- | Po-198: 0^+ | Po-199: 3/2^- | Po-200: 0^+ | Po-201: 3/2^- | Po-202: 0^+ | Po-203: 5/2^- | Po-204: 0^+ | Po-205: 5/2^- | Po-206: 0^+ | Po-207: 5/2^- | Po-208: 0^+ | Po-209: 1/2^- | Po-210: 0^+ | Po-211: 9/2^+ | Po-212: 0^+ | Po-213: 9/2^+ | Po-214: 0^+ | Po-215: 9/2^+ | Po-216: 0^+ | Po-217: 9/2^+ | Po-218: 0^+ | Po-219: 7/2^+ | Po-220: 0^+ unstable isotopes | Po-209 (102 yr) | Po-208 (2.898 yr) | Po-210 (138.376 days) | Po-206 (8.8 days) | Po-207 (5.8 h) | Po-204 (212 min) | Po-205 (104 min) | Po-202 (44.67 min) | Po-203 (37 min) | Po-201 (15.6 min) | Po-200 (11.5 min) | Po-199 (5.48 min) | Po-218 (185.9 s) | Po-198 (106 s) | Po-197 (84 s) | Po-196 (5.8 s) | Po-195 (4.64 s) | Po-217 (1.53 s) | Po-211 (516 ms) | Po-193 (420 ms) | Po-194 (392 ms) | Po-216 (145 ms) | Po-192 (33.2 ms) | Po-191 (22 ms) | Po-189 (3.5 ms) | Po-190 (2.46 ms) | Po-215 (1.781 ms) | Po-188 (400 µs) | Po-214 (164.3 µs) | Po-213 (3.72 µs) | Po-220 (300 ns) | Po-219 (300 ns) | Po-212 (299 ns) neutron cross-section | 0.5 b
Identifiers
CAS number | 7440-08-6