Abstract:High-school and undergraduate college students may often rely on memorization when learning periodic trends, leading to an ineffective understanding of introductory chemistry concepts like atomic radius, ionization energy, and electron affinity. Comprehension of effective nuclear charge (Zeff) is foundational to a complete understanding of periodic trends. Zeff remains an abstract concept for many students, indicating that a manipulative activity for teaching the phenomenon could be a useful way to explain the… Show more
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