19K
碱金属
钾 K
Potassium
物态与数值
- 物态
- 固态
- 周期／族
- 4／1
- 相对原子质量
- 39.09831 （不是质量数）
- 原始密度
- 0.862 g/cm3
- 归一化密度
- 0.862 g/cm³
- 来源熔点字段
- 336.7 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
- 1032.0 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。
Potassium is a chemical element with symbol K (derived from Neo-Latin, kalium) and atomic number 19. It was first isolated from potash, the ashes of plants, from which its name is derived. In the Periodic table, potassium is one of seven elements in column (group) 1 (alkali metals):they all have a single valence electron in their outer electron shell, which they readily give up to create an atom with a positive charge - a cation, and combine with anions to form salts.
出处、中文名称与原始字段
- 来源位置
- multisubject/elements/raw/PeriodicTableJSON.json#/elements/18
- 原记录摘要
- 05e478cb1192c5bbfad8d9600fd3b4c7902c0966ad5d0408bfcc4d5092424c0d
- boil
- 1032
- melt
- 336.7
- name
- Potassium
- xpos
- 1
- ypos
- 4
- block
- s
- group
- 1
- image
- {'url': 'https://upload.wikimedia.org/wikipedia/commons/b/b3/Potassium.JPG', 'title': 'Potassium Pieces', 'attribution': 'Dnn87, CC BY 3.0 <https://creativecommons.org/licenses/by/3.0>, via Wikimedia Commons'}
- phase
- Solid
- wxpos
- 1
- wypos
- 4
- number
- 19
- period
- 4
- shells
- [2, 8, 8, 1]
- source
- https://en.wikipedia.org/wiki/Potassium
- symbol
- K
- cpk-hex
- 8f40d4
- density
- 0.862
- summary
- Potassium is a chemical element with symbol K (derived from Neo-Latin, kalium) and atomic number 19. It was first isolated from potash, the ashes of plants, from which its name is derived. In the Periodic table, potassium is one of seven elements in column (group) 1 (alkali metals):they all have a single valence electron in their outer electron shell, which they readily give up to create an atom with a positive charge - a cation, and combine with anions to form salts.
- category
- alkali metal
- named_by
- 未知
- appearance
- silvery gray
- molar_heat
- 29.6
- atomic_mass
- 39.09831
- atomic_radii
- {'metallic': [227], 'empirical': [220], 'calculated': [243], 'van_der_waals': [275], 'covalent_single': [196], 'covalent_triple': None}
- density_unit
- g/cm3
- spectral_img
- https://en.wikipedia.org/wiki/File:Potassium_Spectrum.jpg
- bohr_model_3d
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_019_potassium/element_019_potassium.glb
- density_g_cm3
- 0.862
- discovered_by
- Humphry Davy
- bohr_model_image
- https://storage.googleapis.com/search-ar-edu/periodic-table/element_019_potassium/element_019_potassium_srp_th.png
- electron_affinity
- 48.383
- ionization_energies
- [418.8, 3052, 4420, 5877, 7975, 9590, 11343, 14944, 16963.7, 48610, 54490, 60730, 68950, 75900, 83080, 93400, 99710, 444880, 476063]
- electron_configuration
- 1s2 2s2 2p6 3s2 3p6 4s1
- electronegativity_pauling
- 0.82
- electron_configuration_semantic
- [Ar] 4s1