[CoF6]3- is a coordination complex ion.
(i) What is the oxidation number of cobalt in the complex?
(ii) How many unpaired electrons are there in the complex?
(iii) State the magnetic behaviour of the complex.
(iv) Give the I.U.P.A.C. name of the complex.
i) [CoF6]3-
x + (6 x -1) = -3
∴ Oxidation number of Co, ‘x’ = +3
(ii) 4 unpaired electrons are there in the complex.
(iii) Complex ions are paramagnetic.
(iv) Hexafluorocobaltate (III) ion.
