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 for Engineering Students

4th Edition

ISBN:9781337398909

Author:Lawrence S. Brown, Tom Holme

Publisher:Lawrence S. Brown, Tom Holme

Chapter12: Chemical Equilibrium

Section: Chapter Questions

Problem 12.26PAE: The following data were collected for the reaction, H2(g) + L(g) ** - HI(g), at equilibrium at 25°C:...

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