【Daily Question】December 24, 2015: Participation = +2 Wealth； +3 to 8 wealth for correct answers
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This post was last edited by zjp on 2015-12-26 08:19. To increase the popularity of the chemical analysis section, a \"One Question per Day\" campaign has been launched; this aims to foster active technical exchanges while also providing financial rewards to users. 【Daily Question】 (Single-choice question) EDTA binds to metal ions primarily in a ( ) relationship. A 1:5 B 1:4 C 1:2 D 1:1. Correct answer: D. Reply with your answer in the comments; you will receive +2 wealth points for participating in the quiz. An additional +3 to +8 wealth points will be given if you answer all questions correctly. Extra wealth rewards will also be provided if you offer thorough analyses and explanations for the questions or answers (including detailed calculation processes). If your answer is correct and your analysis is accurate, it will be marked as the best reply (or the best assistance). Feel free to answer the questions. Note: We will close this post after 24 hours, and at that time we will announce the best reply (the best assistance), as well as the answer and explanation.
EDTA binds to metal ions mostly in a (D) relationship.
EDTA generally forms complexes with metal ions in a (D) relationship. A 1:5 B 1:4 C 1:2 D 1:1. Since EDTA is a 6-membered chelating ligand, such polydentate chelating ligands tend to coordinate cooperatively; that is, once one coordinating atom binds to the metal ion, due to spatial constraints, the other coordinating atoms are in suitable positions and can easily bind to the same metal ion as well. In this way, with these 6 coordinating atoms together, all the coordination sites of the metal ion are occupied (metal ions are usually 6-coordinated), hence a 1:1 ratio
EDTA generally forms complexes with metal ions in a (D ) relationship. A 1:5 B 1:4 C 1:2 D 1:1
D/1: 1————–——–——–——–——–——–––––––
EDTA generally forms complexes with metal ions in a (D ) relationship. A 1:5 B 1:4 C 1:2 D 1:1
EDTA and metal ions generally form complexes in a (B) relationship. A 1:5 B 1:4 C 1:2 D 1:1
EDTA usually forms complexes with metal ions in a (D 1:1) ratio.
EDTA usually forms complexes with metal ions in a (D 1:1) ratio.