What does adding a neutron to an atom's nucleus do to the atom's mass?
o
a. it adds 1 more unit of mass to the atomic weight of the atom.
b. a proton will be added with the neutron, increasing the weight by 2
mass units.
c. a neutron has no mass, so the atomic mass will remain
unchanged.
o
d. adding a neutron is balanced by adding an electron, keeping the
mass the same.