Muon radiative energy loss (in 1.0E06 cm^2/g) in radon (Rn) with Z = 86, A = [222.01758(2)] (f12.0,4f12.4) E (GeV) b_brem b_pair b_nucl b_total 2. 1.9814 0.3638 0.3605 2.7057 5. 2.7520 1.9117 0.3847 5.0485 10. 3.3816 3.1147 0.3773 6.8736 20. 4.0278 4.2247 0.3640 8.6165 50. 4.8729 5.9220 0.3490 11.1440 100. 5.4733 7.0409 0.3420 12.8562 200. 6.0204 8.0311 0.3387 14.3903 500. 6.6332 8.9365 0.3389 15.9086 1000. 7.0012 9.4151 0.3442 16.7605 2000. 7.2867 9.7597 0.3524 17.3989 5000. 7.5509 10.0474 0.3675 17.9658 10000. 7.6812 10.1800 0.3825 18.2437 20000. 7.7674 10.2665 0.3999 18.4338 50000. 7.8386 10.3308 0.4270 18.5964 100000. 7.8700 10.3576 0.4503 18.6779