neutron to proton ratio
determine the stability of stability of a isotope, a ration less than 1, means
that the atom has more protons than neutrons in its nucleus and hence unstable.
when the ratio is a unity, the number of protons and neutrons are equal and
hence if the atom is a light , the atom
will be stable , but if the atom is heavy it will not be stable because of the
effect of coulomb repulsive force between the protons.
if the ratio is greater than one , the atom is
remarkably stable
and is
likely a heavy nuclides .
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