The electron configuration for the cadmium ion (Cd2+) is [Kr] 4d10, indicating that when forming the ion, two electrons are removed from the 5s orbital. This follows the Aufbau principle, which states that electrons are removed in the reverse order of their addition. For transition metals like manganese (Mn2+), electrons are removed from the 4s orbital before the 3d orbital. Understanding these principles is essential for accurately determining electron configurations for various ions.
PREREQUISITESChemistry students, educators, and anyone studying transition metals and their electron configurations will benefit from this discussion.
Okay I see, yes I know the Aufbau principle.Borek said:In general we remove electrons in exactly opposite order we put them on the atom - do you know the Aufbau principle?
There are several exclusions though.