Which of the following statements is true about light? a. light needs a medium through which to travel b. light can not be diffracted around objects c. light can travel through the vacuum of space d. light moves slower than sound

The experiment was repeated many years later but the gases were mixed in a different type of container. a white solid was obtained which was xenon fluoride. predict whether you think 1) krypton and 2) radon will react with fluorine. explain reasons for your predictions