7.24 The electron configuration of B is 1s22s2 , 2p1. (a) Ifeach core electron (i.e., the 1s electrons) were totallyeffective in shielding the valence electrons (i.e., the2s and 2p electrons) from the nucleus and the valenceelectrons did not shield one another, what would be theshielding constant (σ) and the effective nuclear charge(Zeff) for the 2s and 2p electrons? (b) In reality, theshielding constants for the 2s and 2p electrons in B areslightly different. They are 2.42 and 2.58, respectively.Calculate Zeff for these electrons, and explain thedifferences from the values you determined in part (a).
7.24 The electron configuration of B is 1s22s2 , 2p1. (a) Ifeach core electron (i.e., the 1s electrons) were totallyeffective in shielding the valence electrons (i.e., the2s and 2p electrons) from the nucleus and the valenceelectrons did not shield one another, what would be theshielding constant (σ) and the effective nuclear charge(Zeff) for the 2s and 2p electrons? (b) In reality, theshielding constants for the 2s and 2p electrons in B areslightly different. They are 2.42 and 2.58, respectively.Calculate Zeff for these electrons, and explain thedifferences from the values you determined in part (a).
Chapter7: Atomic Structure And Periodicity
Section: Chapter Questions
Problem 120E: In the second row of the periodic table, Be, N, and Ne all have positive (unfavorable) electron...
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Question
7.24 The electron configuration of B is 1s2
2s2 , 2p1. (a) If
each core electron (i.e., the 1s electrons) were totally
effective in shielding the valence electrons (i.e., the
2s and 2p electrons) from the nucleus and the valence
electrons did not shield one another, what would be the
shielding constant (σ) and the effective nuclear charge
(Zeff) for the 2s and 2p electrons? (b) In reality, the
shielding constants for the 2s and 2p electrons in B are
slightly different. They are 2.42 and 2.58, respectively.
Calculate Zeff for these electrons, and explain the
differences from the values you determined in part (a).
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