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Question

What are the nodal planes of dz2 orbital? How can we find nodal planes?


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Solution

Nodal plane:

  • A nodal plane is defined as the region where the possibility of finding an electron is nil/zero.
  • The number of planes corresponds to 'l'.
  • The nodal planes have two nodes which are given below:
  1. Radial node
  2. Angular node

The number of radial nodes can be calculated by using the formula: n-l-1, where n is the principal quantum number and l is the azimuthal quantum number.

The number of angular nodes can be calculated by knowing the value of 'l'.

Nodal planes of dz2 orbital:

  • For d orbital, the value of azimuthal quantum number i.e. 'l' is 2. Thus the minimum value of principal quantum number n is 3. The value for l cannot be greater than n-1.
  • Hence, dz2 orbital has no nodal plane.

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