Chapter 4 Periodic Trends of the Elements

Chapter 4 Periodic Trends of the Elements - Chapter 4...

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Chapter 4 Periodic Trends of the Elements Transition metals are in groups 1B and 3B-8B Either have incompletely filled d subshells or readily lose electrons to achieve incompletely filled d subshells Group 2 not transition metal because their electron configurations always include a completed d subshell Valence electrons determine how atoms interact with one another Having same valence electron configuration is what causes elements in same group to exhibit similar chemical properties Transition Metals: all metals have incompletely filled d subshells. Often no regular pattern in the way the electron configuration changes from one metal to the next in the same period Nuclear charge: number of protons in the nucleus Effective Nuclear Charge: actual magnitude of positive charge that is experienced by an electron in the atom Atoms both attracted to nucleus and repelled by one another = shielding Core electrons (those in completed inner shells) are most effective at shielding Z eff increases from left to right across periodic table
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Chapter 4 Periodic Trends of the Elements - Chapter 4...

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