The shapes of orbital may be represented by boundary surface diagrams. These boundary surface diagram give the most probable regions. S-orbitals are non-directional while p-, d- and f-orbitals have different orientations given by `m_l` values. These boundary surfaces also have sperical nodes or radial nodes and nodal planes which depend upon the values of n and l.
How do 3s and 4s orbitals differ in terms of nodes present in these ?

Explanation

To determine how the 3s and 4s orbitals differ in terms of the nodes present in each, we can follow these steps:

### Step 1: Understand the Types of Nodes
Nodes are regions where the probability of finding an electron is zero. There are two types of nodes:
- **Radial Nodes**: These are spherical surfaces where the probability density is zero. The formula to calculate the number of radial nodes is given by:
\[ \text{Radial Nodes} = n - l - 1 \]
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