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Q5 (CAPF/2018) Science & Technology › Basic Science (Physics, Chemistry, Biology) › Atomic and nuclear physics Answer Verified

The number of angular and radial nodes for 4d orbital is respectively

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Your answer: —  Â·  Correct: A
Explanation

In atomic chemistry, the number of nodes in an orbital is determined by its quantum numbers. For a 4d orbital, the principal quantum number (n) is 4 and the azimuthal quantum number (l) is 2, as l=2 corresponds to d-orbitals. The number of angular nodes is equal to the azimuthal quantum number (l), which for a 4d orbital is 2. The number of radial nodes is calculated using the formula (n - l - 1). Substituting the values for a 4d orbital (4 - 2 - 1) results in 1 radial node. Therefore, the 4d orbital has 2 angular nodes and 1 radial node respectively. This distinction is crucial as radial nodes represent spherical surfaces where the probability of finding an electron is zero, while angular nodes represent planar or conical surfaces.

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