JEE Main202430 Jan 2024Morning ShiftChemistryCoordination CompoundsActual
Choose the correct Statements from the following: (A) Ethane - 1 , 2 - diamine is a chelating ligand. (B) Metallic aluminium is produced by electrolysis of aluminium oxide in presence of cryolite. (C) Cyanide ion is used as ligand for leaching of silver. (D) Phosphine act as a ligand in Wilkinson catalyst. (E) The stability constants of Ca 2 + and Mg 2 + are similar with EDTA complexes. Choose the correct answer from
Options
- A(B), (C), (E) only
- B(C), (D), (E) only
- C(A), (B), (C) only
- D(A), (D), (E) only
Correct answer
C. (A), (B), (C) only
Step-by-step solution
Statement A Ethane− 1 , 2 −diamine is a chelating agent as it contains two coordinating sites that are two nitrogen atoms which donate their lone pairs of electrons and can form a 5 -membered ring with the metal ion. Statement B Based on Hall-Heroults process- The Hall-Heroult process is widely used in the extraction of aluminium. In Hall-Heroults process, pure Al 2 O 3 is mixed with CaF 2 or Na 3 AlF 6 . This results in lowering the melting point of the mixture and increases its ability to conduct electricity. A s