Rita's hands stayed cool when she rubbed them . The water evaporated. how did that help ?

Because its reliable.   there is no pollution  the chances of a radiation leak is low

20hope i helep

In atoms, the electron carries a negative elementary or unit charge; the proton carries a positive charge. the two types of charge are equal and opposite. in an atom of matter, an electrical charge occurs whenever the number of protons in the nucleus differs from the number of electrons surrounding that nucleus.