Question:medium

The number of radial and angular nodes in 4d orbital are, respectively

Updated On: Mar 20, 2026
  • 1 and 2
  • 3 and 2
  • 1 and 0
  • 2 and 1
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The Correct Option is A

Solution and Explanation

To solve this problem, we need to understand the concept of radial and angular nodes in atomic orbitals. The formulae to determine the number of radial and angular nodes are:

  • The number of radial nodes is given by \( n - l - 1 \).
  • The number of angular nodes is equal to the azimuthal quantum number \( l \).

Given that we are dealing with a 4d orbital:

  1. The principal quantum number \( n \) is 4.
  2. The azimuthal quantum number \( l \) for a d orbital is 2.

Now, let's calculate the nodes:

  • Radial nodes: n - l - 1 = 4 - 2 - 1 = 1
  • Angular nodes: l = 2

Therefore, the 4d orbital has 1 radial node and 2 angular nodes.

Hence, the correct answer is: 1 and 2.

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