Shielding

The video tutorial explores the reactivity of alkali metals with water, emphasizing the concept of shielding and its impact on atomic structure and reactivity trends. It explains how atomic radius and electron shells influence the ease of losing electrons, using a magnet analogy to illustrate the shielding effect. The tutorial also covers ionization energy and its decrease down a group in the periodic table, and discusses the reactivity of halogens and their electron affinity.

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