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NEET2026ChemistryStructure of AtomActual

Consider the following schematic plots of orbital wavefunction ( _r ) against distance ( r ) from the nucleus. The figure representing two radial nodes in the orbital is

Options

  1. AD
  2. BA
  3. CB
  4. DC

Correct answer

D. C

Step-by-step solution

A radial node is a point where the radial wavefunction _r becomes zero and changes sign, excluding the origin ( r=0 ) and infinity ( r ). In a plot of _r versus r , the number of radial nodes corresponds to the number of times the curve crosses the horizontal axis ( _r = 0 ). Analyzing the given plots: Figure A: The curve does not cross the r -axis. Number of radial nodes = 0 . Figure B: The curve crosses the r -axis once. Number of radial nodes = 1 . Figure C: The curve crosses the r -axis twice. Number of radial

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