Identify the Mg2+ ion from the figure where, n and p represent the number of neutrons and protons respectively.
The atomic number of Mg is 12 and atomic mass is 24, so the number of protons (p) = 12 and number of neutrons (n)=12.
When 2 electrons are removed from the Mg atom, we get Mg2+. Mg2+ has a total of 10 electrons (2, 8).
The electronic configuration of Magnesium ion is K=2 and L=8.
Hence,