JEE Main · 2024 · 30 Jan 2024 · Shift 1 · Coordination Compounds

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Choose the correct Statements from the following:
(A) Ethane-1 2-diamine is a chelating ligand.
(B) Metallic aluminium is produced by elecrtrolysis 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 the options given below:

(A)(B), (C), (E) only
(B)(C), (D), (E) only
(C)(A), (B), (C) only✓ Correct
(D)(A), (D), (E) only

Answer: (C)

Solution

(A) True — ethane-1,2-diamine has two N donor atoms and chelates a metal centre.

(B) True — the Hall-H\'eroult process electrolyses

A l_{2} O_{3}

dissolved in molten cryolite.

(C) True — silver is leached as

[Ag (CN)_{2}]^{-}

using

NaCN

/air.

(D) False — Wilkinson's catalyst,

[RhCl (PP h_{3})_{3}]

, uses triphenylphosphine, not phosphine.

(E) False —

C a^{2 +}

forms a markedly more stable EDTA complex than

M g^{2 +}

.

So (A), (B), (C) only are correct.

JEE Main · 2024 · 30 Jan 2024 · Shift 1 · Single correct option

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JEE Main · 2024 · 30 Jan 2024 · Shift 1 · Coordination Compounds

Solution

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