Krypton 452 INDEX

For convenience, the even rarer and less stable krypton compounds are also covered in this entry. All xenon compounds are very strong oxidants and many are also explosively unstable. For a now obsolete review, see [1]. A recent compact review of noble gas chemistry is found in [2], A series of alkali xenates, MH0Xe03.1.5H20 are unstable explosive solids. The equivalent fluoroxenates MFXe03are far more stable. Individually indexed compounds are ... 

The refractivities of the four halogens—i.e. the refractive index less unity multiplied by 106—are F, 195 Cl, 768 Br, 1125 I, 1920 (violet) and 2050 (red). According to C. Cuthbertson and E. B. R. Prideaux, if referred to fluorine unity, these constants are nearly in the ratio 1 4 6 10. A similar ratio occurs with fieon, argon, krypton, and xenon. 

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