Detailed calculations show that the value of Zeff for the outermostelectrons in Si and Cl atoms is 4.29+ and 6.12+, respectively.(a) What value do you estimate for Zeff experienced bythe outermost electron in both Si and Cl by assuming coreelectrons contribute 1.00 and valence electrons contribute0.00 to the screening constant? (b) What values do you estimatefor Zeff using Slater’s rules? (c) Which approach gives amore accurate estimate of Zeff? (d) Which method of approximationmore accurately accounts for the steady increase inZeff that occurs upon moving left to right across a period?(e) Predict Zeff for a valence electron in P, phosphorus, basedon the calculations for Si and Cl.

Detailed calculations show that the value of Zeff for the outermostelectrons in Si and Cl atoms is 4.29+ and 6.12+, respectively.(a) What value do you estimate for Zeff experienced bythe outermost electron in both Si and Cl by assuming coreelectrons contribute 1.00 and valence electrons contribute0.00 to the screening constant? (b) What values do you estimatefor Zeff using Slater’s rules? (c) Which approach gives amore accurate estimate of Zeff? (d) Which method of approximationmore accurately accounts for the steady increase inZeff that occurs upon moving left to right across a period?(e) Predict Zeff for a valence electron in P, phosphorus, basedon the calculations for Si and Cl.

Chemistry: The Molecular Science

5th Edition

ISBN:9781285199047

Author:John W. Moore, Conrad L. Stanitski

Publisher:John W. Moore, Conrad L. Stanitski

Chapter5: Electron Configurations And The Periodic Table

Section: Chapter Questions

Problem 142QRT

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