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2:42
YouTube
Wayne Breslyn (Dr. B.)
Finding the Number of Valence Electrons for an Element
An explanation and practice for finding the number of valence electrons for elements on the periodic table. This is a key first step for drawing Lewis dot structures for molecules. Looking at the Periodic Table, atoms have a regularly occurring number of valence electrons based on their Group number. Group 1: One Valence Electron Group 2: Two ...
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