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Why Zn, Cd and Hg are not regarded as transition elements?


Zn, Cd, Hg are not regarded as transition element Because they have the completely filled d-sub-shell with outer electronic configuration (n-1)d10ns2.
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On what ground can you say that scandium (Z = 21) is a transition element but zinc (Z = 30) is not?

Why the melting points of transition elements are high?

The outer electronic configuration of copper is 3d10 4s1, yet it is considered transition element. Why?


Name the first element of 3rd transition series.


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