Explain the anomalous behavior of copper and chromium.
Answers
Answer:
Copper and chromium have anomalous behaviour as they do not follow the Aufbau principle and rearrange their electrons in a different way so as to achieve greater stability.
It explains that electrons occupy orbitals starting from the lower energy to that of the higher ones. However, copper and chromium behave differently.
According to the principle, the arrangements should have been:
Cr: [Ar] 4s2 3d4
Cu: [ Ar] 4s2 3d9
But in reality, to achieve partially filled and completely filled stable orbitals they rearrange as:
Cr: [Ar] 4s1 3d5
Cu: [ Ar] 4s1 3d10.
Answer:
Copper and chromium have anomalous behaviour as they do not follow the Aufbau principle and rearrange their electrons in a different way so as to achieve greater stability.
It explains that electrons occupy orbitals starting from the lower energy to that of the higher ones. However, copper and chromium behave differently.
According to the principle, the arrangements should have been:
Cr: [Ar] 4s2 3d4
Cu: [ Ar] 4s2 3d9