polonium
chemical element with symbol Po and atomic number 84
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Summary
polonium is a chemical element[1]. polonium draws 10,736 Wikipedia views per month (chemical element category, ranking #47 of 144).[2]
Key Facts
- Discoverer or inventor: Marie Curie[3], Pierre Curie[4]
- Named after: Poland[5]
- Canonical SMILES: [Po][6]
- Element symbol: Po[7]
- Chemical formula: Po[8]
- Subclass of: post-transition metal[9], group 16[10], p-block[11]
- Part of: period 6[12], group 16[13]
- Commons category: Polonium[14]
- Unicode character: 釙[15]
- Crystal system: cubic crystal system[16]
- Time of discovery or invention: 1898[17]
- IPA transcription: pəˈloʊniəm[18]
- Topic's main category: Category:Polonium[19]
- Commons gallery: Polonium[20]
- Atomic number: 84[21]
- Electronegativity: 2[22]
- Oxidation state: -2[23], 2[24], 4[25], 5[26], 6[27]
- Described by source: Armenian Soviet Encyclopedia[28], Small Brockhaus and Efron Encyclopedic Dictionary[29], Granat Encyclopedic Dictionary[30]
- Different from: Element 84[31]
- Density: 9196.0 kilogram per cubic metre[32]
- Electrical conductivity: 2500000.0 siemens per metre[33]
- Mass: 208.9824308 dalton[34]
- Thermal conductivity: 20.0 watt per metre kelvin[35]
- Melting point: 527.0 K[36]
- Boiling point: 1235.0 K[37]
Why It Matters
polonium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[38] polonium is known by 46 alternative names across languages and contexts.[39]