Question #7cfbb

1 Answer
SupernovaT
Dec 16, 2017

#""_Z^"A+2" X# (A+2)

Explanation:

If we follow the general form of writing atomic numbers and relative atomic masses;

#""_Z^A X#

Where A is Relative Atomic Mass and Z is Atomic Number for element 'X'

Relative atomic mass is calculated by adding the number of protons with the number of neutrons present in an atom, if you have an additional two neutrons, then I would represent the isotope as;

#""_Z^"A+2" X#

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