Answer Bank Effective nuclear charge decreases from left to right across a period on the periodic table. In a Be atom, a 1s electron has a greater Zer than a 2s electron. Electrons in an s orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge. Across a period, as Zer increases, atomic size decreases. Effective nuclear charge does not depend on the number of electrons present in an atom. A ls electron in a Be atom has a smaller Zef than a 1s electron in a Li atom.

Answer Bank Effective nuclear charge decreases from left to right across a period on the periodic table. In a Be atom, a 1s electron has a greater Zer than a 2s electron. Electrons in an s orbital are more effective than those in other orbitals at shielding other electrons from the nuclear charge. Across a period, as Zer increases, atomic size decreases. Effective nuclear charge does not depend on the number of electrons present in an atom. A ls electron in a Be atom has a smaller Zef than a 1s electron in a Li atom.

Chemistry & Chemical Reactivity

10th Edition

ISBN:9781337399074

Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel

Chapter6: The Structure Of Atoms

Section: Chapter Questions

Problem 47GQ: Which of the following are applicable when explaining the photoelectric effect? Correct any...

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