Rank the following five elements by ionization energy Rank from highest to lowest ionization energy. To rank items as equivalent, overlap them

Highest to Lowest

S, Cl, Si, Mg, Na

Cl, S, Si, Mg, Na

Explanation:

The ionization energy is the minimum amount of energy required to remove the most loosely bound electron of an isolated neutral gaseous atom. In the periodic table, it increases from left to right and from bottom to top.

All the elements are in the same period, so the ionization energy is higher in higher groups.

S is in Group 16 Cl is in Group 17 Si is in Group 14 Mg is in Group 2 Na is in Group 1

The order from highest to lowest ionization energy is:

Cl, S, Si, Mg, Na