Question 1

The image shows three spheres of increasing size. In the context of quantum numbers and atomic orbitals, what do these spheres most likely represent?

Accepted Answer

The increasing energy and size of s orbitals as the principal quantum number $$n$$ increases (e.g., 1s, 2s, 3s).

Question 2

Which quantum number is primarily responsible for the difference in size between the spheres shown in the image?

Accepted Answer

The principal quantum number $$n$$

Question 3

If the smallest sphere in the image represents the 1s orbital, what do the other two spheres most likely represent?

Accepted Answer

The 2s and 3s orbitals, respectively, which are larger due to higher $$n$$ values.

Question 4

Which statement best explains why the spheres increase in size as shown in the image?

Accepted Answer

As the principal quantum number $$n$$ increases, the average distance of the electron from the nucleus increases, resulting in larger orbitals.

Lesson 3.4: Quantum Numbers and Atomic Orbitals

Study Guide - Practice Questions