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Most Important Selected Qs for JEE AdvancedChemistryCoordination Compounds

(i) Ti is purified by Van Arkel method. In it formula of metal iodide vapour formed is TiI _ p . (ii) Oxidation state of Fe in Fool's gold is q. (iii) In the test of Ni ²⁺ rosy red ppt. of [ Ni ( dmg )₂ ] is formed. In it r five membered rings and s six membered. H-bonding having ring are formed. Value of ( p+q+r+s 2 ) is........

Correct answer

5

Step-by-step solution

(i) Van Arkel method (vapour) Ti +2 I ₂ (vapour) TiI ₄ [ high temperature ] (pure) Ti +2 I ₂ (ii) Fools gold FeS ₂ Fe ²⁺ S ⁻- S ⁻

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