for an oxygen atom,wich requires more energy,tha addition of two electron or the removal of one electron?explain why
Happy to fill that 2p shell with 6 electrons instead of the 4 electrons in the neutral atom
so wich one between the addition of two electrons or removal of an electron will requere more ionisation energy
so wich one between the addition of two electrons or removal of an electron will requere more energy
To determine whether the addition of two electrons or the removal of one electron requires more energy for an oxygen atom, we need to consider its electronic configuration and the concept of electron affinity and ionization energy.
First, let's examine the electronic configuration of an oxygen atom, which has 8 protons and 8 electrons. The electronic configuration of oxygen is 1s^2 2s^2 2p^4.
When we add two electrons to the oxygen atom, these electrons will need to occupy available orbitals. However, according to the Pauli exclusion principle, no two electrons in an atom can have the same set of quantum numbers. This means that the additional electrons must be placed in higher energy orbitals since the lower energy orbitals are already occupied. Therefore, adding two electrons to an oxygen atom will require more energy.
Now let's consider the removal of one electron from an oxygen atom. This process involves overcoming the attractive force between the positively charged nucleus and the negatively charged electron. The energy required to remove an electron from an atom is known as ionization energy.
In the case of oxygen, the removal of one electron from the outermost shell (2p^4) will result in a stable electronic configuration of 1s^2 2s^2 2p^3 (which is the configuration of the stable oxygen ion, O-). The ionization energy required to remove this electron is relatively high because the 2p^4 orbital is moderately stable and closer to being completely filled. Therefore, the removal of one electron from an oxygen atom also requires a significant amount of energy.
In conclusion, both the addition of two electrons and the removal of one electron from an oxygen atom require significant amounts of energy. However, adding two electrons generally requires slightly more energy due to the need to fill higher-energy orbitals.