QUESTION 30 Which statement best explains the toxicity of trivalent lanthanide cations to plant life O The lanthanide ion replaces calcium in the oxygen evolving centre and the resulting hydroxide intermediate is not sufficiently nucleophilic to attack the transient manganyl(v) species in the S4 state O The lanthanide ion replaces calcium in the oxygen evolving centre and the resulting aqua intermediate is not sufficiently acidic to generate a hydroxide intermediate O The lanthanide coordinates to pheophytin disrupting the electron transport chain O The lanthanide ion replaces magnesium in the P680 causing a shift in its redox potential O The lanthanide cation precipitates chloride from the active site of the oxygen evolving centre

QUESTION 30 Which statement best explains the toxicity of trivalent lanthanide cations to plant life O The lanthanide ion replaces calcium in the oxygen evolving centre and the resulting hydroxide intermediate is not sufficiently nucleophilic to attack the transient manganyl(v) species in the S4 state O The lanthanide ion replaces calcium in the oxygen evolving centre and the resulting aqua intermediate is not sufficiently acidic to generate a hydroxide intermediate O The lanthanide coordinates to pheophytin disrupting the electron transport chain O The lanthanide ion replaces magnesium in the P680 causing a shift in its redox potential O The lanthanide cation precipitates chloride from the active site of the oxygen evolving centre

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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