(a) Using valence bond theory, write the hybridization and ...

CBSE Class 12 Chemistry 2019 Outside Delhi Set 2 Solved Paper

Question : 11

Total: 27

(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 d6 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−
Fe2+−3d6

Six CN−ions give their six pairs of electron to the empty orbitals. The orbitals utilized for hybridization is d2 sp3.

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