Question

Why are Cu, Ag and Au considered as transition
elements even though these have completely filled
d-orbitals ?
​

Answer 1

These elements have completely filled d-orbitals but their ions in their stable oxidation state have incomplete d-orbitals. Hence they show general properties of transition elements

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Answer 2

Answer:

These elements have completely filled d-orbitals but their ions in their stable oxidation state have incomplete d-orbitals. Hence they show general properties of transition elements.

Explanation:

Ag has a completely filled 4d orbital (4d10 5s1) in its ground state. ... Thus, the d-orbital now becomes incomplete (4d9). Hence, it is a transition element. wherein it will have incompletely filled d-orbitals (4d), hence a transition metal.

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