Krypton

Symbol 符号

Kr

Atomic number 原子序数

36

Atomic mass 原子质量	83.80		Thermal conductivity 热导率	0.00009
Atomic radius 原子半径	1.03		Covalent radius 共价半径	1.12
Density 密度	0.00374		Atomic volume 原子体积	38.9
Melting point 熔点	116.6		Oxidation states 氧化态	...
Boiling point 沸点	119.80		Stable isotopes 稳定同位素	6
Heat of vapor. 汽化热	9.029		Electronegativity 电负性	...
Heat of fusion 熔化热	1.638		First ionization 第一电离能	13.999
Specific heat 比热容	0.248		Electrical conduct. 电导率	...

Electron configuration 电子排布

Krypton

Krypton is a noble gas which is found in the atmosphere in trace quantities.

While it has not found much practical use, it's spectrum has been used as a standard for length measurement.

Krypton Nuclear Data

Z	A	Atomic Mass (u) 原子质量（u）	Nuclear Mass(GeV/c2 核质量（GeV/c²）	Binding Energy(MeV) 结合能（MeV）	Spin 自旋	Natural Abund. 天然丰度	Half-life 半衰期	Decay 衰变	Q MeV Q值（MeV）
36	78	77.920396	72.5646	675.56	0	0.0035	stable 稳定	...	...
36	80	79.916380	74.4238	695.44	0	0.0225	stable 稳定	...	...
36	81	80.916590	75.3555	703.32	7/2	...	0.21My 0.21My（专名或术语）	EC 电子俘获（EC）	0.28
36	82	81.913483	76.2841	714.28	0	0.116	stable 稳定	...	...
36	83	82.914135	77.2163	721.75	9/2	0.115	stable 稳定	...	...
36	84	83.911507	78.1453	732.27	0	0.57	stable 稳定	...	...
36	85	84.912532	79.0778	739.38	9/2	...	10.72y	b-	0.69
36	86	85.910615	80.0075	749.24	0	0.173	stable 稳定	...	...
36	90	89.919528	83.7418	773.23	0	...	32.3s	b-	4.39
36	92	91.926270	85.6111	783.09	0	...	1.84s	b-	6.06

This is an example of how the relative abundances of isotopes are determined. The mass spectrograph uses a magnetic field to bend charged ions of the material into circles with diameters dependent upon the mass. It then can measure the current as a function of distance to determine the relative abundances of the isotopes. 这是确定同位素相对丰度的一个例子。质谱仪利用磁场使材料中的带电离子弯曲成圆，其直径取决于质量。然后它可以测量电流随距离的变化来确定同位素的相对丰度。

Atomic data 原子数据