Most Important Selected Qs for JEE AdvancedChemistryCoordination Compounds
[ Cr ( H ₂ O )₆ ] Cl ₃ has a magnetic moment of 3.83 BM . Which of the following distribution of 3 d electrons in chromium ion of the complex is incorrect? [Atomic number of Cr =24 ]
Options
- A3 d_ x y ^1 3 d_ x^2-y^2 ^1 3 d_ z^2 ^1
- B3 d_ x y ^1 3 d_ j z ^1 3 d_ x z ^1
- C3 d_ x y ^1 3 d_ y z ^1 3 d_ z^2 ^1
- D3 d_ x y ^1 3 d_ x^2-r^2 ^1 3 d_ x z ^1
Correct answer
D. 3 d_ x y ^1 3 d_ x^2-r^2 ^1 3 d_ x z ^1
Step-by-step solution
The Cr ³⁺ ion in the given octahedral complex has 3 electrons in its 3 d subshell which are accommodated in the t_ 2 g level consisting of d_ x y d_ y z and d_ x z which have lower energy than e_g level consisting of d_ x^2-y^2 and d_ z^2 .