A sudden large jump between the values of second and third ionisation energies of an element would be associated with the electronic configuration

Options

A. `1s^(2)2s^(2)2p^(6),3s^(1)3p^(2)`
B. `1s^(2),2s^(2)2p^(6),3s^(2)3p^(1)`
C. `1s^(2),2s^(2)2p^(6),3s^(1)`
D. `1s^(2),2s^(2)2p^(6),3s^(2)`

Explanation

To determine which electronic configuration will exhibit a sudden large jump between the values of the second and third ionization energies, we need to analyze the given electronic configurations and understand the concept of ionization energy.

### Step-by-Step Solution:

1. **Understanding Ionization Energy:**
- Ionization energy is the energy required to remove an electron from an atom or ion. The first ionization energy is for removing the first electron, the second for removing the second, and so on.
- A large jump in ionization energy typically indicates that an electron is being removed from a much more stable electron configuration, such as a noble gas configuration or a fully filled subshell.

2. **Analyzing the Given Electronic Configurations:**
- The configurations provided are:
1. 1s² 2s² 2p⁶ 3s¹ 3p²
2. 1s² 2s² 2p⁶ 3s²
3. 1s² 2s² 2p⁶ 3s¹
4. 1s² 2s² 2p⁶ 3s²

3. **Identifying the Valence Electrons:**
- For configurations with partially filled orbitals, removing an electron may not require a significant amount of energy.
- For example, in configurations where the outermost shell is fully filled (like 3s² or 2p⁶), removing an electron will require significantly more energy due to the stability of these filled subshells.

4. **Examining Each Configuration:**
- **Configuration 1:** 1s² 2s² 2p⁶ 3s¹ 3p²
- Removing the first electron from 3p² is easier than removing from 3s¹, indicating no significant jump.
- **Configuration 2:** 1s² 2s² 2p⁶ 3s²
- Removing the first electron from 3s² is easier, and removing the second will still be from a filled subshell, so no large jump.
- **Configuration 3:** 1s² 2s² 2p⁶ 3s¹
- Similar reasoning as above; no large jump.
- **Configuration 4:** 1s² 2s² 2p⁶ 3s²
- The second ionization energy would involve removing an electron from a filled 3s² subshell, and the third would involve removing from a stable 2p⁶ configuration, indicating a large jump.

5. **Conclusion:**
- The electronic configuration that will show a sudden large jump between the second and third ionization energies is **1s² 2s² 2p⁶ 3s²** (Option 4).

### Final Answer:
The electronic configuration associated with a sudden large jump between the values of second and third ionization energies is **1s² 2s² 2p⁶ 3s²**.