As one descends a group on the periodic table,first ionization energy generally

Question

Quizplus · Accepted Answer

As one descends a group on the periodic table, the outermost electron is farther from the positively charged nucleus and is shielded by an increasing number of inner electrons. This results in a decrease in the effective nuclear charge holding the outermost electron, making it easier to remove this electron, and hence decreasing the first ionization energy.

As One Descends a Group on the Periodic Table,first Ionization