Description

A scenario-based intro for Grade 9. Q1: 'Sodium (2,8,1) has 11 electrons total. But when it reacts with other elements, which electrons actually DO anything?' A) All 11, B) The inner 2, C) The outer 1 (correct!), D) The middle 8. Show: 'Only the OUTER shell electrons participate in bonding!' Q2: 'Th

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