Exam question
I was given an exam question concerning election configurations and after checking the mark scheme i found it said that the answer that i gave was to be rejected.
The question asked me to fill to complete the electron configuration of a copper atom
they complete the electron configuration up to
My answer was , the mark scheme gave the answer
The question asked me to fill to complete the electron configuration of a copper atom
they complete the electron configuration up to
My answer was , the mark scheme gave the answer
Unparseable latex formula:
is 4s filled first.3d^1^04s^1
Yes, in Copper and Chromium (the two exceptions) the 4s is filled in first. This is when, in chromium it ends in 3d54s1. I think, this is what i remember.
This is due to it being more stable when there are 5 pairs of electrons in the 3d orbital, as opposed to 4 pairs and an odd one.
This is due to it being more stable when there are 5 pairs of electrons in the 3d orbital, as opposed to 4 pairs and an odd one.
(edited 13 years ago)
Original post by Thomas...
The two you need to know about for A level, that is.
Original post by BJack
The two you need to know about for A level, that is.
Ok ok ok. I have been out-shone.
Ha, I was just regurgitating what I remember from last year! Thanks for the edit.
Original post by Thomas...
Yes, in Copper and Chromium (the two exceptions) the 4s is filled in first. This is when, in chromium it ends in 3d54s1. I think, this is what i remember.
This is due to it being more stable when there are 5 pairs of electrons in the 3d orbital, as opposed to 4 pairs and an odd one.
This is due to it being more stable when there are 5 pairs of electrons in the 3d orbital, as opposed to 4 pairs and an odd one.
Right i see thank you very much for your help
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