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) Cyani

Question

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 acts as a ligand in Wilkinson catalyst.
(E) The stability constants of Ca²⁺ and Mg²⁺ are similar with EDTA complexes.

Canvas Classes · Accepted Answer

Strategy:
 Evaluate the validity of each statement independently.

Step 1: Analyze statements
- (A) Ethane-1,2-diamine is a chelating ligand  True. It binds through two N atoms forming a stable 5-membered ring.
- (B) Metallic Al is produced by electrolysis of  in cryolite (Hall-Héroult process)  True.
- (C)  is used in leaching of silver (MacArthur-Forrest process)  True ( is formed).
- (D) Wilkinson catalyst is , where phosphine () is a ligand  True.
- (E) Stability constants of  and  with EDTA

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