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NEET CHEMISTRYStructure of AtomEasy

Question

Which of the following pairs of d-orbitals will have electron density along the axes?

A

d_{z^2}, d_{xz}

B

d_{xz}, d_{yz}

C

d_{z^2}, d_{x^2-y^2}

D

d_{xy}, d_{x^2-y^2}

Step-by-Step Solution

The five d-orbitals are classified based on their orientation relative to the coordinate axes:

  1. Axial Orbitals (ege_g set): The dx2−y2d_{x^2-y^2} and dz2d_{z^2} orbitals have their electron density lobes directed along the axes. The dx2−y2d_{x^2-y^2} orbital lies along the x and y axes, while the dz2d_{z^2} orbital lies along the z-axis.
  2. Non-Axial Orbitals (t2gt_{2g} set): The dxyd_{xy}, dyzd_{yz}, and dxzd_{xz} orbitals have their lobes oriented between the axes (at 45 degrees to the axes).

Therefore, the pair with electron density along the axes is dz2d_{z^2} and dx2−y2d_{x^2-y^2} .

Exam Context & Concepts Covered

This question aligns with the NEET CHEMISTRY syllabus, specifically targeting concepts from Structure of Atom. Mastering this topic is crucial for scoring well in the upcoming medical entrance examinations. Solving conceptually related problems will help you understand the nuances of these concepts and improve your problem-solving speed.

CHEMISTRYStructure of Atomfollowingdorbitalselectrondensity

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