Question

In going down a group in the periodic table, what effect does electron shielding generally have on the effective nuclear
charge acting on the outermost electron in an atom?

Answer 1

Answer:  Electron shielding has little effect on the effective nuclear charge because electrons are being added to principal energy levels, not to any inner levels. As the nuclear charge increases across a period, the effective nuclear charge acting on the outermost electrons increases.

Explanation: