Question

The probability density plots of $1s$ and $2s$ atomic orbitals are given in figures.

The density of dots in a region represents the probability density of finding electrons in the region. On the basis of the above diagram, which of the following statements is incorrect?

• A. $1s$ and $2s$ orbitals are spherical in shape
• B. The probability of finding the electron is maximum near the nucleus
• C. The probability of finding the electron at a given distance is equal in all directions
• D. The probability density of electrons for $2s$ orbital decreases uniformly as distance from the nucleus increases

Answer 1

Answer: (D)

For $1s$ orbital, the probability density is maximum at the nucleus and it decreases sharply as we move away from it. On the other hand, for $2s$ orbital, the probability density first decreases sharply to zero and again starts increasing.