When Iodine-131 emits a β particle (beta particle), what nuclide is produced? *

When Iodine-131 emits a β particle will produce Xe-131

Radioactivity is the process of unstable isotopes to stable isotopes by decay, by emitting certain particles,  

So for reaction Iodine-131 :

pure water does not conduct electricity very well. however, when certain substances are dissolved in water, the solution does conduct electricity. you can make a simple device that shows how well a solution conducts electricity. this device uses a flashlight bulb to indicate how well the solution conducts electricity. the better the solution conducts electricity, the brighter the bulb will glow.

explanation: