34Se
多原子非金属
硒 Se
Selenium
物态与数值
- 物态
- 固态
- 周期／族
- 4／16
- 相对原子质量
- 78.9718 （不是质量数）
- 原始密度
- 4.81 g/cm3
- 归一化密度
- 4.81 g/cm³
- 来源熔点字段
- 494.0 K（部分来源实际为三相点，教学前需核对条件）
- 来源沸点字段
- 958.0 K
部分超重元素属性为预测值，不能当作已审实验值。氢原始气体密度单位与归一化单位不同，均保留展示。
英文来源解释
中文翻译待补。
Selenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
出处、中文名称与原始字段
- 来源位置
- multisubject/elements/raw/PeriodicTableJSON.json#/elements/33
- 原记录摘要
- 05e478cb1192c5bbfad8d9600fd3b4c7902c0966ad5d0408bfcc4d5092424c0d
- boil
- 958
- melt
- 494
- name
- Selenium
- xpos
- 16
- ypos
- 4
- block
- p
- group
- 16
- image
- {'url': 'https://upload.wikimedia.org/wikipedia/commons/7/7f/Selenium.jpg', 'title': 'Ultrapure Black, Amorphous Selenium, 3 - 4 grams. Original size in cm: 2', 'attribution': 'Hi-Res Images ofChemical Elements, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/selenium.php'}
- phase
- Solid
- wxpos
- 30
- wypos
- 4
- number
- 34
- period
- 4
- shells
- [2, 8, 18, 6]
- source
- https://en.wikipedia.org/wiki/Selenium
- symbol
- Se
- cpk-hex
- ffa100
- density
- 4.81
- summary
- Selenium is a chemical element with symbol Se and atomic number 34. It is a nonmetal with properties that are intermediate between those of its periodic table column-adjacent chalcogen elements sulfur and tellurium. It rarely occurs in its elemental state in nature, or as pure ore compounds.
- category
- polyatomic nonmetal
- named_by
- 未知
- appearance
- black, red, and gray (not pictured) allotropes
- molar_heat
- 25.363
- atomic_mass
- 78.9718
- atomic_radii
- {'metallic': None, 'empirical': [115], 'calculated': [103], 'van_der_waals': [190], 'covalent_single': [116], 'covalent_triple': [107]}
- density_unit
- g/cm3
- spectral_img
- 未知
- bohr_model_3d
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_034_selenium/element_034_selenium.glb
- density_g_cm3
- 4.81
- discovered_by
- Jöns Jakob Berzelius
- bohr_model_image
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_034_selenium/element_034_selenium_srp_th.png
- electron_affinity
- 194.9587
- ionization_energies
- [941, 2045, 2973.7, 4144, 6590, 7880, 14990]
- electron_configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p4
- electronegativity_pauling
- 2.55
- electron_configuration_semantic
- [Ar] 3d10 4s2 4p4