Pretending this is a real question.... Yes, Paladins can chain stun mobs. Just not Dragons, Giants, Gods or thousands of seemingly random mobs that the devs decided we needed to be challenged by and thus have given them immunity to stuns.
technically yes? However anything you want to stun will be immune. So tier 1 trash mobs? Why not. Any named or other thing you care to stunned? Certainly not. Its common that tier 2 zones are full of mobs immune to stun (not played a pal on this beta so cannot speak to stunning in it specifically).