57La
镧系元素
镧 La
Lanthanum
物态与数值
- 物态
- 固态
- 周期／族
- 6／3
- 相对原子质量
- 138.905477 （不是质量数）
- 原始密度
- 6.162 g/cm3
- 归一化密度
- 6.162 g/cm³
- 来源熔点字段
- 1193.0 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
- 3737.0 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。
Lanthanum is a soft, ductile, silvery-white metallic chemical element with symbol La and atomic number 57. It tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. It gave its name to the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table:it is also sometimes considered the first element of the 6th-period transition metals.
出处、中文名称与原始字段
- 来源位置
- multisubject/elements/raw/PeriodicTableJSON.json#/elements/56
- 原记录摘要
- 05e478cb1192c5bbfad8d9600fd3b4c7902c0966ad5d0408bfcc4d5092424c0d
- boil
- 3737
- melt
- 1193
- name
- Lanthanum
- xpos
- 3
- ypos
- 9
- block
- f
- group
- 3
- image
- {'url': 'https://upload.wikimedia.org/wikipedia/commons/f/f7/Lanthanum.jpg', 'title': '1 cm Big Piece of Pure Lanthanum', 'attribution': 'Jurii, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons, source: https://images-of-elements.com/lanthanum.php'}
- phase
- Solid
- wxpos
- 3
- wypos
- 6
- number
- 57
- period
- 6
- shells
- [2, 8, 18, 18, 9, 2]
- source
- https://en.wikipedia.org/wiki/Lanthanum
- symbol
- La
- cpk-hex
- 70d4ff
- density
- 6.162
- summary
- Lanthanum is a soft, ductile, silvery-white metallic chemical element with symbol La and atomic number 57. It tarnishes rapidly when exposed to air and is soft enough to be cut with a knife. It gave its name to the lanthanide series, a group of 15 similar elements between lanthanum and lutetium in the periodic table:it is also sometimes considered the first element of the 6th-period transition metals.
- category
- lanthanide
- named_by
- 未知
- appearance
- silvery white
- molar_heat
- 27.11
- atomic_mass
- 138.905477
- atomic_radii
- {'metallic': [187], 'empirical': [195], 'calculated': [226], 'van_der_waals': None, 'covalent_single': [180], 'covalent_triple': [139]}
- density_unit
- g/cm3
- spectral_img
- 未知
- bohr_model_3d
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_057_lanthanum/element_057_lanthanum.glb
- density_g_cm3
- 6.162
- discovered_by
- Carl Gustaf Mosander
- bohr_model_image
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_057_lanthanum/element_057_lanthanum_srp_th.png
- electron_affinity
- 53
- ionization_energies
- [538.1, 1067, 1850.3, 4819, 5940]
- electron_configuration
- 1s2 2s2 2p6 3s2 3p6 4s2 3d10 4p6 5s2 4d10 5p6 6s2 5d1
- electronegativity_pauling
- 1.1
- electron_configuration_semantic
- [Xe] 5d1 6s2