Chemistry · Introduction to coordination compounds, Werner's theory, ligands, coordination number, denticity, chelation
Which of the following statement(s) is/are correct? This question has multiple c
Which of the following statement(s) is/are correct? This question has multiple correct options
- A. Primary valency of the central metal of a complex is always satisfied by anions.
- B. Secondary valency of the central metal of a complex may be satisfied by either negative ions or neutral molecules.
- C. Species which show primary valencies in a complex compound can be precipitated out
- D. None of the above
Step-by-step solution
Statement A is incorrect because primary valency is satisfied by anions only when the metal has a nonzero oxidation state; for zero oxidation state, no anions are needed. Statement C is incorrect because only counter ions (outside coordination sphere) are precipitable; ligands that satisfy primary valency via coordination are not precipitable. Statement B is consistent with coordination chemistry: ligands can be neutral molecules (e.g., H2O, NH3) or negative ions (e.g., Cl-, CN-). Therefore, only option B is correct.
Related MCQs
- Potassium ferrocyanide is an example of…
- The ligand _{3} \)…
- Surfactants, having both cationic and anionic centres attached to the same molecule, are called:…
- Identify the incorrect statement(s) with respect to : This question has multiple correct options…
- In the metal carbonyls of the general formula _{x} \) where metal the metal is bonded to:…