Question
Give the octahedral as well as tetrahedral field electronic configuration for the Cr3+ and Mn2+
ions. Which site will be preferred by these ions, octahedral or tetrahedral? Justify your answer.
Answer :
Word Count : 278
Cr³⁺ has the electronic configuration ([Ar],3d^3). In an octahedral crystal field, the five d-orbitals split into three lower-energy (t_{2g}) orbitals and two higher-energy (e_g) orbitals. The three electrons occupy the lower (t_{2g}) orbitals singly according to Hund's rule, giving the configuration (t_{2g}^3e_g^0). In a tetrahedral crystal field, the splitting is reversed, with the lower (e) orbitals and higher (t_2) orbitals. The three electrons are distributed as (e^2t_2^1). Mn²⁺ has _______ _____ ______ _______ ______ ___.
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Cr³⁺ has the electronic configuration ([Ar],3d^3). In an octahedral crystal field, the five d-orbitals split into three lower-energy (t_{2g}) orbitals and two higher-energy (e_g) orbitals. The three electrons occupy the lower (t_{2g}) orbitals singly according to Hund's rule, giving the configuration (t_{2g}^3e_g^0). In a tetrahedral crystal field, the splitting is reversed, with the lower (e) orbitals and higher (t_2) orbitals. The three electrons are distributed as (e^2t_2^1). Mn²⁺ has _______ _____ ______ _______ ______ ___.
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