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Please explain Exchange energy in copper


vivtoons

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My questions exactly are:

 

Q 1: Why 3d10 4s1 configuration of copper is more stable than 3d9 4s2 in terms of exchange energy ?

 

 

Q 2 : Can a electron of 3d exchange to 4s electron, having same spin?

 

Q3: How many possible exchange sets with a parallel spins can occur in copper ?

 

Please help me asap.

 

 

 

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What we mean is that you have to show what you've done so far to answer it. These look like they are HW questions from a book. We're not going to just give you the answers — that doesn't help you understand anything.

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  • 3 weeks later...

Any electron exchange is possible if and only if a more stable state is achieved. Now look, always remember these points:

1. A fully filled orbital is MOST stable

2. Then you have a HALF filled orbital.

 

ANY change that involves one e- transfer and resulting configuration is more stable then it is possible. I'll give you an example then you yourself solve for Copper.

Chromium has atomic number 24, its outer shell configuration should have been 3d4 4s2 but if one electron from outer s orbital jumps to the inner d orbital it gives a more stable HALF filled configuration of 3d5 4s1. So Chromium actually has this configuration. I guess this information is enough for solving your question. Do post your answer here.

Good Luck!

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