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JEE Main2026Jan 28, Shift 1Chemistry
Q.

Figure 1. electron probability density for 2s orbital

Figure 2. wave function for 2s orbital

Which of the following point in Figure 2 most accurately represents the nodal surface as shown in Figure 1?

  1. A

    B

  2. B

    D

  3. C

    C

  4. D

    A

Solution

A radial node is the location where the wave function crosses zero (so that probability density is also zero).

In Figure 2, point B is exactly where , i.e. the curve crosses the x-axis. That is the radial node corresponding to the spherical nodal surface drawn in Figure 1.

Option (1), point B.

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