Answer
The ion symbol for the ion is = $Be^{2+}$
Work Step by Step
The image shows an atom with two electrons and a nucleus containing four protons (indicated by the four “+” symbols).
An atom with 4 protons is beryllium (Be).
If it has only 2 electrons, that means it has lost two electrons compared to the neutral atom.
Ion symbol: $Be^{2+}$
