Chemistry · No topic
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The electrons will enter which of these orbitals after filling the 3d orbital
- A
4d
- B
4f
- C
4s
- D
4p
After filling the 3d orbital, electrons will next occupy the 4f orbital. This follows the order dictated by the Aufbau principle, which states that electrons fill orbitals starting from the lowest energy level. The 4d and 4p orbitals are higher in energy than the 4f orbital, and the 4s orbital is filled before the 3d, making it an incorrect option as well.
The 4d orbital is filled after the 4s and 4p orbitals, not directly after the 3d orbital. Thus, this option is incorrect.
The 4f orbital is filled after the 3d orbital according to the Aufbau principle, making this the correct choice.
The 4s orbital is filled before the 3d orbital, so this option is incorrect.
The 4p orbital is filled after the 4s orbital, so it is also incorrect as a direct successor to the 3d orbital.
Tagged under Chemistry · No topic · 2025