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Biomedical Admissions Practice Test

Category - Biomedical Admissions Practice Test

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Which of the following is not true about complex ions?
  1. Complex ions are formed with a metal as the central atom
  2. The other molecules that bond to the metal are called ligands
  3. Ligands act as Lewis Acids
  4. The coordination number of a complex ion refers to the number of bonds the center atom forms
  5. All of the above are true
Explanation
Answer: C. Ligands, the compounds that bind to the central metal atom, always act as Lewis Bases. Lewis Bases donate lone pairs of electrons to the Lewis Acid (the metal ion). All other statements are true.
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