posted by Jess D .
hi i have a science exam on tuesday and i don't understand this question and really need some help.
Draw a diagram of a) Magnesium Atom, Mg
b) Fluorine ion, F1-
It is likely that they are looking for a Bohr type model, so concentric rings of electrons around a nucleus of protons and neutrons. You will need to use a periodic table to find the number of protons, neutrons.