Arrange the isotopes of sulfur and phosphorus in order of decreasing number of neutrons.
Rank the isotopes from most to fewest neutrons. To rank items as equivalent, overlap them.
Neutrons=mass number-atomic number most S-36 and P-35(both have 20 neutrons) (36-16=20)(35-15=20) P-33 (33-15=18neutrons) P-32 (32-15=17 neutrons) least S-32 and P-31 (both have 16 neutrons) (32-16=16)(31-15=16)
