What is sheileding?

Answer 1

Shielding refers to the phenomenon where the effective nuclear charge experienced by an electron in an atom is reduced due to the presence of other electrons. Inner-shell electrons repel outer-shell electrons, which diminishes the attraction between the nucleus and the outer electrons. This concept is crucial in understanding atomic structure and electron configurations, as it influences ionization energy and atomic radii. The extent of shielding varies among different elements and electron configurations.