38.2: Introduction

Physci 101 Lab: Physical Science Laboratory Investigations · LibreTexts

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    The shell model identifies the number of electrons in each main energy shell of an atom, when the atom is in the ground state. Each element in a vertical group of the periodic table has similar physical and chemical characteristics because all elements in a vertical group have the same electron configurations. The electron configuration also determines the reactivity of an element. By accounting for electrons in the main energy levels (shells), and recognizing that electrons begin to pair-up once a shell is half full, this model can be used to predict chemical bonds.

    clipboard_e889b3668b56001dcece25a5d0982f00e.png
    Figure \(\PageIndex{1}\): Shell Model

    This page titled 38.2: Introduction was last modified on Sun, 09 Aug 2026 22:42:24 GMT and is shared under a CC BY 4.0 license and was authored, remixed, and/or curated by Teresa Ciardi via source content that was edited to the style and standards of the LibreTexts platform.