`{:("Given",K,L,M,N,),(,2,8,11,2,):}`
The number of electrons present in `l=2` is -

Options

A. `3`
B. `6`
C. `5`
D. `4`

Explanation

To determine the number of electrons present in the subshell where the azimuthal quantum number \( l = 2 \), we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Quantum Number \( l \)**:
- The azimuthal quantum number \( l \) indicates the type of subshell. For \( l = 2 \), this corresponds to the d subshell.

2. **Understand the Electron Configuration**:
- We are given a total of 23 electrons, which we need to distribute according to the Aufbau principle (filling the lowest energy levels first).

3. **Write the Electron Configuration**:
- The electron configuration for 23 electrons is:
- \( 1s^2 \) (2 electrons)
- \( 2s^2 \) (2 electrons)
- \( 2p^6 \) (6 electrons)
- \( 3s^2 \) (2 electrons)
- \( 3p^6 \) (6 electrons)
- \( 4s^2 \) (2 electrons)
- \( 3d^{10} \) (10 electrons)
- \( 4p^3 \) (3 electrons)
- This gives us a complete configuration of \( 1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^3 \).

4. **Count the Electrons in the d Subshell**:
- In the configuration, the d subshell (3d) can hold a maximum of 10 electrons. However, in this case, we have:
- \( 3d^{10} \) which means there are 10 electrons in the d subshell.
- But since we are specifically looking for the number of electrons corresponding to \( l = 2 \) (the d subshell), we need to focus on the 3d subshell.

5. **Final Count**:
- The number of electrons in the d subshell (where \( l = 2 \)) is **10**.

### Answer:
The number of electrons present in \( l = 2 \) is **10**.