How do the isotopes hydrogen-1 and hydrogen-2 differ? Hydrogen-2 has one proton; hydrogen-1 has none. Hydrogen-2 has two protons; hydrogen-1 has one. Hydrogen-2 has one neutron; hydrogen-1 has none. Hydrogen-2 has one more electron than hydrogen-1.

28. which is not a reason that water is used to store spent fuel rods from nuclear power plants? water increases the speed of the chain reaction in the fuel rods. water protects nuclear power plant workers from the high temperature and radiation of the fuel rods. water acts as a radiation shield to reduce the radiation levels. water cools the spent rods. salts action