CBSE Class 12-science Answered
How to find co ordination no. and oxidation state of central atom in a coordinate compound??
Asked by Rishabh Tripathi | 18 Jun, 2013, 11:02: PM
Expert Answer
eg 1 -
K4 [ Fe (CN)6 ]
what is written in the [ ] is known as the coordination complex.eg [ Fe (CN)6 ]
the coordination complexs are made of a central metal ,[Fe] +(Ligands)] ;(CN) in this case.
Ligands are simple atoms or groups of atoms that donate electrons.
what is written outside[ ] , in this case K4, is the primary valency / ionisable valency of the metal atom[within the complex].
Central metal is Fe here.let the Oxidation state of Fe ,the central metal be x
K4 [ Fe (CN)6 ]
(+4) + x (-6) = 0
thus x , the Oxidation state of the central metal atom Fe is II
eg 2 -
K3 [ Fe (CN)6 ]
what is written in the [ ] is known as the coordination complex. [ Fe (CN)6 ] again
what is written outside[ ] , in this case K4, is the primary valency / ionisable valency of Fe, the
Central metal
.let the Oxidation state of Fe be y
K3 [ Fe (CN)6 ]
(+3) + x (-6) = 0
thus x , the Oxidation state of the central metal atom Fe is III
Answered by | 19 Jun, 2013, 01:18: PM
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