Write the electronic configuration for: Draw the distribution of d electrons for

Question

Write the electronic configuration for: Draw the distribution of d electrons for the central atoms in the following molecules using crystal field theory. Consider the four compounds K_3[Cr(C_2,O_4) ] middot 3H_2O, K_2[Cu(C_2O_4)] middot 2H_2O, K_3[Fe(C_20_4)] middot 3H_2O, and K_3[A1(C_2O_4)_3] middot 3H_2O. Which would be colored and which would be colorless? Briefly explain why the colored compounds are colored and why the colorless compounds are colorless. Consider Fe^2. Fe^3+ and Zn^2+: Write the electron configuration tor each ion. Explain why zinc, unlike iron, is unlikely to have additional oxidation states, such as Zn+ or Zn^3+. The absorption maximum for the complex ion [Co(NH_3)_6]^3+occurs at 477 nm. a. Calculate the crystal field splitting energy in kJ/mole. What color will the compound be? (Look at a color wheel.)

Explanation / Answer

Electronic configurations of

Cr3+ (no. of e- = 21) 1s22s22p63s23p6 3d3

Cu2+ (no. of e- = 27) 1s22s22p63s23p6 3d9

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