Question

multiple choice 1 point which element has a higher ionization energy and why, bromine or iodine? bromine. more energy is needed to add an electron because there is more attraction between the valence electrons and the protons in the nucleus. iodine. more energy is needed to remove an electron because there is more attraction between the valence electrons and the protons in the nucleus. bromine. more energy is needed to remove an electron because there is more attraction between the valence electrons and the protons in the nucleus. iodine. more energy is needed to remove a proton because there is more attraction between the valence electrons and the protons in the nucleus.

Explanation:

Step1: Recall ionization energy concept

Ionization energy is energy to remove an electron.

Step2: Consider atomic size trend

Bromine is above iodine in periodic table. Atomic size increases down a group.

Step3: Analyze electron - nucleus attraction

Smaller atoms (like bromine) have valence electrons closer to nucleus, stronger attraction. So more energy to remove an electron from bromine than iodine.

Answer:

C. Bromine. More energy is needed to remove an electron because there is more attraction between the valence electrons and the protons in the nucleus.