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MHT CET202523 Apr 2025Evening ShiftChemistryStructure of AtomActual

What is the number of node in 2 s orbital?

Options

  1. A0
  2. B1
  3. C2
  4. D3

Correct answer

B. 1

Step-by-step solution

The total number of nodes in an orbital is determined by n - 1 , where n is the principal quantum number. For the 2s orbital, n = 2 , so the total number of nodes is 2 - 1 = 1 . Since s orbitals have l = 0 , all nodes are radial. The radial node count is given by n - l - 1 = 2 - 0 - 1 = 1 . The correct answer is B.

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