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Copper is neither an alkaline nor alkaline earth metal. For this reason it should not be...

Copper is neither an alkaline nor alkaline earth metal. For this reason it should not be compared to the other samples. From a theoretical standpoint, why is it unreasonable to compare copper to the other metals? Do not invoke laws or generalities. Use quantum mechanics.

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Answer #1

The answer is indeed quantum mechanics. Copper (or Cu) has a atomic number of 29 which means that it has 2 electrons in 4s orbital and 9 electrons in 3d orbital. But the energy difference between 4s and 3d is not much and hence one electron from 4s orbital jumps to vacant 3d orbital to achieve higher stability due to completely filled d orbitals which shield the atom. this leaves us with lone electron in 4s orbital which is responsible for making copper copper. All the properties of copper can be attributed to this lone electron in 4s orbital. For this same reason silver and gold behave in same manner but they are precious metals.

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