Order the elements Si, S, and F in terms of increasing ionization energy.
A) Si, S, F
B) F, S, Si
C) F, Si, S
D) Si, F, S
E) S, Si, F

Question

Quizplus · Accepted Answer

Ionization energy generally increases across a period from left to right and decreases down a group in the periodic table. Since Si is to the left of S, which is to the left of F in the same period, the order of increasing ionization energy is Si < S < F.

Order the Elements Si, S, and F in Terms of Increasing