MHT CET 2023 Chemistry question

Identify anionic sphere complex from following

(A)Hexaamminecobalt (III) chloride
(B)Potassium hexacyanoferrate (II)Correct
(C)Tetraamminedichlorocobalt (III) ion
(D)Pentaamminechlorocobalt (III) sulphate

Answer: (B)

Solution

In a coordination compound the coordination sphere (the part in square brackets) can be cationic, anionic or neutral. An anionic sphere complex has a coordination sphere carrying a net negative charge. (a) : sphere charge , cationic. (b)

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Question ID VK-098171