22. Bartlett's classic experiment demonstrated for the first time that a noble gas can form a stable compound. Which of the following statements about this discovery is correct? (A) Bartlett showed that xenon reacts directly with $\mathrm{F}_{2}$ to form $\mathrm{XeF}_{6}$ at room temperature (B) Bartlett reacted xenon with $\mathrm{PtF}_{6}$ to form a xenon fluoroplatinate salt (C) The product of Bartlett's experiment was neutral $\mathrm{XeF}_{2}$ (D) In Bartlett's experiment, $\mathrm{PtF}_{6}$ acted as a reducing agent toward xenon (E) Bartlett demonstrated that xenon is more reactive than krypton under all conditions