roentgenium
chemical element with symbol Rg and atomic number 111
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Summary
roentgenium is a chemical element[1]. roentgenium draws 2,837 Wikipedia views per month (chemical element category, ranking #91 of 144).[2]
Key Facts
- Discoverer or inventor: GSI Helmholtz Centre for Heavy Ion Research[3]
- Instance of: synthetic element[4]
- Named after: Wilhelm Röntgen[5]
- Location of discovery: GSI Helmholtz Centre for Heavy Ion Research[6]
- Element symbol: Rg[7], Uuu[8]
- Subclass of: d-block[9]
- Part of: period 7[10], group 11[11], transition metal[12]
- Commons category: Roentgenium[13]
- Unicode character: 錀[14], 𬬭[15]
- Crystal system: body-centered cubic[16]
- Time of discovery or invention: December 8, 1994[17]
- IPA transcription: rʌntˈɡɛniəm[18], rɛntˈɡɛniəm[19]
- Topic's main category: Category:Roentgenium[20]
- Commons gallery: Roentgenium[21]
- Atomic number: 111[22]
- Oxidation state: -1[23], 1[24], 3[25], 5[26], 7[27]
- Described by source: Armenian Soviet Encyclopedia[28]
- Different from: Rentgen[29]
- Mass: 282.16912[30]
- On focus list of Wikimedia project: Wikipedia:Vital articles/Level/4[31]
- Electron configuration: [Rn] 7s² 5f¹⁴ 6d⁹[32]
- P14541: PBYzr[33]
Why It Matters
roentgenium has Wikipedia articles in 30 language editions, a strong signal of global cultural recognition.[34] roentgenium is known by 59 alternative names across languages and contexts.[35]