CBSE Class 12 Chemistry 2019 Outside Delhi Set 2 Solved Paper

Question : 11 of 27

Marks: +1, -0

(a) Using valence bond theory, write the hybridization and magnetic character of the complex

[ {\Fe}( {\CN})_6] ^{4-}

. (Atomic no. of

{\Fe}=26

)
(b) Write the electronic configuration of

{\d}^6

on the basis of crystal field theory when:
(i)

∆_0<

P and
(ii)

∆_0>{P}

Solution:

(a) Oxidation number of

{\Fe}

is +2 in

[ {\Fe}( {\CN})_6] ^{4-}

{\Fe}^{2+}-3 {\d}^6

Six

{\CN}^{-}

ions give their six pairs of electron to the empty orbitals. The orbitals utilized for hybridization is

{\d}^2 {\ sp}^3

Go to Question:

Prev Question

Next Question