exam 2: periodicity & electron configuration/em spectrum\nwhich sequence correctly places the elements in…

exam 2: periodicity & electron configuration/em spectrum\nwhich sequence correctly places the elements in order of increasing (low to high) ionization energy?\no f, cl, br, i\no cl, f, br, i\no i, br, cl, f\no i, br, f, cl

exam 2: periodicity & electron configuration/em spectrum\nwhich sequence correctly places the elements in order of increasing (low to high) ionization energy?\no f, cl, br, i\no cl, f, br, i\no i, br, cl, f\no i, br, f, cl

Answer

Explanation:

Step1: Recall ionization - energy trend

Ionization energy increases across a period and decreases down a group in the periodic table. F, Cl, Br, and I are all in Group 17 (halogens). As we move down the group, the atomic size increases, and the out - most electrons are farther from the nucleus, making them easier to remove. So, the ionization energy decreases down the group.

Answer:

I, Br, Cl, F