M4 The Periodic Table: Halogens
Slide 26 of 45
Displacement of Halogens
Similarly, more reactive element will displace a less reactive one from a compound (and take its place). Work out the Halogen reactivity series (most reactive at the top) based on the experiment you performed in the lab.
Pure Bromine, Br2, is a RED liquid  (at room temperature & pressure).
Pure Chlorine, Cl2, is a GREEN gas  (at room temperature & pressure).