Most scorpions won't kill you. out of like 1500 species only 20 or so are concitered medically signifigant, and even then if you are a healthy adult your chances of dying are slim. Don't get me wrong I'm not saying the others can't put a hurting on you because their is a chance of going into anaphalitic shock (this is the cause of most deaths from scorpion stings in healthy people) but their reputation is quite overstated.
As for emps, to my knowledge their has never been a death caused by one and out of the 20 or so I have had I have only seen 1 even use its stinger. So short of having an allergic reaction after being stung in the neck, I would say no, you can't die from an emperor.
