Question

The probability density plots of 1s and 2s orbitals are given in diagram.
The density of dots in a region represents the probability density of finding electrons in the region. On the basis of above diagram which of the following statement(s) is/are correct?

• A. 1s and 2s orbitals are spherical in shape
• B. The probability density 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: (A), (B), (D)

The correct options are
A 1s and 2s orbitals are spherical in shape
B The probability density of finding the electron is maximum near the nucleus
D The probability density of electrons for 2s orbital decreases uniformly as distance from the nucleus increases

From figure it can be seen that,
as electron density is circular and maximum near nucleus so 1s and 2s orbitals are spherical in shape & probability density of finding the electron is maximum near the nucleus.
And as dotts are decreasing with distance so probability density of electrons for 2s orbital decreases uniformly as distance from the nucleus increases.