The electronic configuration of the element which is just above the element with atomic number 43 in the same group is….

Options

A. `1s^2,2s^2,2p^6,3s^2,3p^6,3d^5,4s^2`
B. `1s^2,2s^2,2p^6,3s^2,3p^6,3d^5,4s^2,4p^5`
C. `1s^2,2s^2,2p^6,3s^2,3p^6,3d^6,4s^2`
D. `1s^2,2s^2,2p^6,3s^2,3p^6,3d^7,4s^2`

Answer

To find the electronic configuration of the element that is just above the element with atomic number 43 (which is Technetium, Tc) in the same group, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Atomic Number**: The atomic number of Technetium (Tc) is 43.

2. **Determine the Group**: Technetium is in Group 7 of the periodic table. Elements in the same group have similar valence electron configurations.

3. **Find the Element Above Technetium**: The element just above Technetium in Group 7 is Manganese (Mn), which has an atomic number of 25.

4. **Write the Electronic Configuration of Manganese**:
- The electronic configuration of Manganese (Mn) can be derived as follows:
- Manganese has 25 electrons.
- The electronic configuration is:
- 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁵
- This can also be summarized as: [Ar] 4s² 3d⁵, where [Ar] represents the electron configuration of Argon (atomic number 18).

5. **Conclusion**: The electronic configuration of the element just above Technetium (atomic number 43) in the same group (Group 7) is:
- **Answer**: [Ar] 4s² 3d⁵