There are more electrons in the n = 4 shell than for the n = 3 shell in krypton. However...

There are more electrons in the n = 4 shell than for the n = 3 shell in krypton. However, the peak in the radial distribution in Figure 21.6 is smaller for the n = 4 shell than for the n = 3 shell. Explain this fact.

Figure 21.6