For the main group elements (excluding the transition elements), is it necessary memorize to memorize the type of ion each element makes or could you predict the Ion charge using a periodic table?

Question

Owen Ambrose · Accepted Answer

Look at the Group number, and decide whether the atom is a metal or a non-metal.........

The number of valence electrons is represented by the group number. And thus the alkali metals have the ONE valence electron, and the alkaline earths have TWO valence electrons. And typically, they lose these electrons upon reaction to give #M^+# and #M^(2+)# ions. We go to the right-hand side of the Periodic Table as we face it, and the increased nuclear charge, means that these elements are OXIDIZING, i.e. they accept electrons to form #X^(-)# and #E^(2-)# ions.

Cooper Anderson · Answer

undefined The periodic table can be used to predict the ion charge for main group elements (transition elements excluded). The ion charge is usually related to the number of valence electrons an element possesses; elements in the same group typically form ions with the same charge.