Question

why are chromium and copper exceptions to electronic configuration? ​

Answer 1

Answer:

There are two main exceptions to electron configuration: chromium and copper. In these cases, a completely full or half full d sub-level is more stable than a partially filled d sub-level, so an electron from the 4s orbital is excited and rises to a 3d orbital. ... Alright so let's talk about chromium.

Answer 2

Answer:

Re: Why are Copper and Chromium exceptions? These two elements are exceptions because it is easier for them to remove a 4s electron and bring it to the 3d subshell, which will give them a half filled or completely filled subshell, creating more stability

Explanation:

Mark as brainlist ❤️ follow me