What period 3 element has the following ionization energies (all in kJ/mol) ?
IE₁ = 1012 IE₂ = 1900 IE₃= 2910 IE₄= 4960 IE₅= 6270 IE₆= 22,200

Question

What period 3 element has the following ionization energies (all in kJ/mol)? IE₁ = 1012 IE₂ = 1900 IE₃= 2910 IE₄= 4960 IE₅= 6270 IE₆= 22,200

Quizplus · Accepted Answer

The ionization energies increase as electrons are removed from an atom. Looking at the provided ionization energies, we can see a general trend of increasing ionization energies as more electrons are removed. This indicates that we are dealing with a period 3 element, as there are only a handful of elements that have more than three electrons to remove in their outermost shell.

Out of the period 3 elements, the ionization energies match up most closely with those of phosphorus (P), which has five electrons in its outermost shell. Therefore, the best choice is P.

What Period 3 Element Has the Following Ionization Energies (All