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QUESTION
An atom of polonium-218 undergoes alpha decay. What new element is produced?
Lead.
is the loss of two protons and two neutrons from a nucleus. This decreases the total by ##4## and the by ##2##.
In the form of an equation this is
##""_ 84^218"Po"-> ""_ 82^214"X"+""_ 2^2"He"##
Looking at we can find that element number ##82## is lead, ##"Pb"##, so the product element ##"X"## is ##"Pb"##.
