In [Fe(CN)_5(NO^+)]^ 2- , Fe has +3 state. It can be decided by

JEE Advanced Chemistry question

In , Fe has +3 state. It can be decided by

(A)Magnetic measurementCorrect
(B)Colligative property
(C)Colour
(D)Hybridization

Answer: (A)

Solution

Whether the NO ligand is bound as (making Fe formally +3, low-spin , one unpaired electron) or as neutral NO (which would change the metal's formal oxidation state and electron count differently) is distinguished experimentally by measuring the magnetic moment of the complex and comparing it with the value

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Question ID VK-159611