Which of the following elements would you expect to have the highest ionization energy value

Chlorine (CI)

Fluorine (F)

Lithium (LI)

Neon (Ne)

The answer to your question is: From higher to lower: Neon, Fluorine, Chlorine, Lithium

Explanation:

Ionization energy is the energy that is needed to free and electron from an element in gaseous state. Elements in the periodic table are ordered considering their Ionization energy and is higher in the upper part of the periodic table and also is higher in the right seccion.

So

Chlorine (CI) chlorine is in the right section of the periodic table then it must have a higher Ionization energy than Lithium and Neon but lower than Fluorine.

Fluorine (F) must have a higher Ionization energy than chlorine and lithium but lower than Neon due to its position in the periodic table.

Lithium (LI) from this elements, Lithium has the lower Ionization energy because is in the left section of the periodic table.

Neon (Ne) must have the higher Ionization energy of the list of elements because in located in the 8A (the last group to the right) and at the same level that Fluorine.