Ununennium (Uue)
Superactinide표준 원자량
해당 없음전자 배치
[Og] 8s¹녹는점
해당 없음끓는점
해당 없음밀도
3 kg/m³산화 상태
++1, ++3전기 음성도(Pauling)
0.86제1 이온화 에너지
463.1 eV발견 연도
해당 없음원자 반지름
240 pmUnunennium is the temporary IUPAC name for element 119, an undiscovered superheavy element placed below francium in group 1. All of its properties are predicted. It is expected to have an outer 8s electron and broadly alkali-metal-like chemistry, but strong relativistic effects may make it less simple than a direct extrapolation from cesium or francium. No isotope has been confirmed.
This element has not been synthesized or experimentally confirmed. All listed physicochemical properties are calculated, extrapolated, or model-dependent.
No macroscopic sample of ununennium exists, so its appearance is unknown. It is usually predicted to be a metallic solid under ordinary conditions, but color, luster, density, melting point, and other bulk properties have not been measured.
Ununennium has no confirmed practical, industrial, medical, or commercial use. If produced, it would be made atom by atom for nuclear and chemical research, chiefly to test models of superheavy nuclei, decay chains, and relativistic effects in the heaviest group 1 element. Any chemical study would probably involve single atoms or very small numbers of atoms and short observation times.
No compound of ununennium has been synthesized or characterized. Calculations predict that the +1 oxidation state and the Uue⁺ ion would be the most accessible, as in lighter alkali metals. Representative species considered in theoretical work include ununennium fluoride (UueF), ununennium chloride (UueCl), and ununennium hydroxide (UueOH). Relativistic stabilization of the 8s electron may alter bond strengths and volatility relative to simple periodic trends.
The safety properties of ununennium are not experimentally known. Any atoms produced would be radioactive, and isotope-specific half-lives and decay modes would control the hazard. In practice, risks would arise mainly from accelerator operation, radioactive targets, recoil products, and decay radiation, not from chemical toxicity of a bulk element. No ordinary exposure scenario exists.
Ununennium has no confirmed natural occurrence and no known environmental cycle. Because no isotope has been observed, its environmental mobility, speciation, and ecological effects are unmeasured. If atoms were produced in a laboratory, their quantities would be far too small for environmental behavior to be studied directly, and rapid radioactive decay is expected to dominate their fate.
Ununennium has no commodity market, commercial supply chain, or recoverable source. Production, if achieved, would require a heavy-ion accelerator, an intense beam, and a rare heavy actinide target, followed by atom-at-a-time detection. The limiting factors are target availability, beam time, very low reaction probabilities, and short-lived products. Economic discussion is therefore about research capability rather than demand, substitution, or recycling.
No confirmed ununennium has been detected on Earth or in extraterrestrial material. Superheavy nuclei near this region may be formed transiently in extreme nucleosynthesis environments, but any such atoms are expected to decay rapidly unless an unusually long-lived isotope exists. The proposed island of stability remains a theoretical motivation for searches.
- Ununennium is a systematic temporary name meaning one-one-nine.
- It would begin the eighth period of the periodic table if confirmed.
- No isotope of ununennium has yet been accepted as discovered.
- Its chemistry is inferred from theory and periodic trends, not experiments.
- Detection would rely on nuclear decay signatures rather than a visible sample.
- Relativistic effects are expected to be important for its 8s electron.
이미지
특성
물리적 특성
- 원자 반지름(경험값)
- 240 pm 모든 원소의 원자 반지름(경험값) 비교 →
- 공유 결합 반지름
- 272 pm 모든 원소의 공유 결합 반지름 비교 →
- 밀도
- 3 kg/m³ 모든 원소의 밀도 비교 →
- 결정 구조
- 체심 입방 모든 원소의 결정 구조 비교 →
화학적 특성
- 전기 음성도(Pauling)
- 0.86 모든 원소의 전기 음성도(Pauling) 비교 →
- 전자 친화도
- 0.25 eV
- 제1 이온화 에너지
- 463.1 eV 모든 원소의 제1 이온화 에너지 비교 →
- 산화 상태
- ++1, ++3 모든 원소의 산화 상태 비교 →
- 전자 배치
- [Og] 8s¹
열역학적 특성
해당 없음
핵 특성
- 양성자 수
- 119 모든 원소의 양성자 수 비교 →
- 알려진 동위원소 수
- 0 모든 원소의 알려진 동위원소 수 비교 →
- 안정 동위원소 수
- 0 모든 원소의 안정 동위원소 수 비교 →
- 자연 존재 형태
- 관측되지 않음
존재비
해당 없음
안전
- 방사성
- 예
결정 구조
해당 없음
전자 구조
- 전자껍질별 전자 수
- 2, 8, 18, 32, 32, 18, 8, 1 모든 원소의 전자껍질별 전자 수 비교 →
식별자
- CAS 등록 번호
- 54846-86-5 모든 원소의 CAS 등록 번호 비교 →
전자 배치 예측값
——이 이온의 전자 배치 데이터가 없습니다.
원자 모형
동위원소에 따라 중성자 수, 질량, 안정성은 달라지지만, 중성 원자의 전자 배치는 달라지지 않습니다.
해당 없음
개략적인 원자 모형이며 실제 비율과 다릅니다.
원자 지문
방출 / 흡수 스펙트럼
동위원소 분포
안정 동위원소가 없습니다.
| 질량수 | 원자 질량(u) | 천연 존재비 | 반감기 |
|---|
상 / 상태
상/상태 데이터 없음
해당 없음
상/상태 데이터 없음