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Why are chromium and copper exceptions to electronic configuration? ​

Answer» <html><body><p>There are two main exceptions to electron configuration: chromium and <a href="https://interviewquestions.tuteehub.com/tag/copper-933790" style="font-weight:bold;" target="_blank" title="Click to know more about COPPER">COPPER</a>. 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 <a href="https://interviewquestions.tuteehub.com/tag/4s-318811" style="font-weight:bold;" target="_blank" title="Click to know more about 4S">4S</a> <a href="https://interviewquestions.tuteehub.com/tag/orbital-1138169" style="font-weight:bold;" target="_blank" title="Click to know more about ORBITAL">ORBITAL</a> is excited and rises to a 3d orbital. ... Alright so <a href="https://interviewquestions.tuteehub.com/tag/let-11597" style="font-weight:bold;" target="_blank" title="Click to know more about LET">LET</a>'s <a href="https://interviewquestions.tuteehub.com/tag/talk-659101" style="font-weight:bold;" target="_blank" title="Click to know more about TALK">TALK</a> about chromium.</p></body></html>


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