Isotopes Worksheet

Isotopes Worksheet – Grade 12U
Atomic number is the number of
in an atom.
Mass Number is the total number of protons and
Isotopes are the atoms in an element that have the
Natural abundance: The abundance of a particular
on the planet.
in an atom.
but a
naturally found
Average atomic mass = f1M1 + fnMn … where f is the fraction representing the
of the isotope and M is the
of the isotope.
Their nuclei have a special property: they emit energy while searching for
A technetium isotope may be used to identify