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Krypton Isotopes

Stable Krypton Isotopes - Kr Isotopes
Nominal
mass
Accurate
mass
% Natural
abundance
Chemical
form
Enrichment
available %

78 Kr 77.920396 (9) 0.35 (1) gas 99.9

80 Kr 79.916380 (9) 2.28 (6) gas 99.9+

82 Kr 81.913482 (6) 11.58 (14) gas 99.9+

83 Kr 82.914135 (4) 11.49 (6) gas 99.9+

84 Kr 83.911507 (4) 57.0 (4) gas 99+

86 Kr 85.910616 (5) 17.3 (22) gas 99.9+
 

Krypton Isotopes are used in various medical and scientific applications. Kr-82 is used for the production of Rb-81/Kr-81m generators. Many of the stable isotopes of Krypton are used in the study of the pulmonary system. Kr-78 can be used for the production of Br-75 although production of Br-75 via Se-76 is more common. Kr-86 has been used to define the standard measure of length: 1 meter is exactly 1,650,763.73 wavelengths of this isotope.