why d5 electronic configuration is more stable than d6
Answers
Answer:
this is because of a phenomenon known as exchange energy . The greater the exchange energy , the more stable the atom is . So the d10 type of electronic configuration is more stable than the d5 type of electronic configuration .
Answer:
d5 is exactly half-filled so it is more stable than d6.
Explanation:
A d sub-shell has five d orbitals and so it can have a maximum of 10 electrons.
This can be explained based on half-filled and filled sub-shells which are found to be of more stable arrangements. The stability of half-filled sub-shells is caused by the occupation of each orbital by one electron, resulting in spreading and equal distribution of charge around an atom. The other major factor which explains the stability of these configurations is their exchange energy.
Exchange energy is the energy released when electrons in different orbitals of the same sub-shell, or a different sub-shell with similar energy, exchange their positions.
It has been noticed that exchange energy is large when all the orbitals of the same sub-shell are either completely filled or half-filled.
Conclusion:
In d5, the orbitals are exactly half-filled unlike in d6, which has one electron more than half-filled. Therefore, the stability of d5 is greater than d6.