From which sublevel are the first 2 electrons for Fe removed from ______
From which sublevel is the next electron for Fe removed from _________
Why does the removal of electrons stop at this subleval and number of electron??
Please help me !!!
Fe is 1s2 2s2 2p6 3s2 3p6 3d6 4s2.
So the first 2 e come from the 4s level. The next 6 (one at a time) would come from the next lower level. which one is that?
It stops at 3 because the configuration then is
1s2 2s2 2p6 3s2 3p6 3d5. One reason is that the 3d level at half filled is stable. A second reason is that with a +3 ion, it is almost impossible to pull another electron off and overcome the attractive forces between that last electron and the +3 charge of the nucleus.
thank you
To determine from which sublevel the first 2 electrons of Fe (iron) are removed, you need to understand the electron configuration of iron. The electron configuration of iron is 1s² 2s² 2p⁶ 3s² 3p⁶ 4s² 3d⁶.
1. The first two electrons are removed from the 4s sublevel. In the electron configuration, the 4s sublevel is filled with 4s² electrons, and these are the outermost electrons of iron. Therefore, they are the first to be removed.
To determine from which sublevel the next electron for iron is removed, you need to know the electron configuration of iron after removing the first two electrons.
2. After removing the first two electrons, the electron configuration of iron becomes 1s² 2s² 2p⁶ 3s² 3p⁶ 3d⁶.
The next electron is removed from the 3d sublevel. The 3d sublevel is deeper within the electron shells compared to the 4s sublevel. As electrons are removed, they are typically taken from the higher energy levels (outermost shells) first before moving to the lower energy levels (inner shells). However, there are exceptions when it comes to transition metals like iron.
The removal of electrons stops at this sublevel (3d sublevel) because the 3d sublevel is more stable than the 4s sublevel. In transition metals, the 3d sublevel has a slightly lower energy than the 4s sublevel. Therefore, the electron is removed from the 3d sublevel instead of the 4s sublevel to maintain stability.
The number of electrons in each sublevel follows the Aufbau principle and the Pauli exclusion principle, which govern the filling of electrons in the atomic orbitals. According to these principles, the 3d sublevel can hold a total of 10 electrons. Once the 10th electron is removed from the 3d sublevel, the removal of electrons stops at this sublevel because it is fully occupied and further removal would violate the Pauli exclusion principle.