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D-BLOCK ELEMENTS

1)Those elements in which differential electron is placed in d-orbital.

2)These elements are known as transition elements.

3)Zn,Cd,Hg are in d block, but they are not regarded as transition elements because they have completely filled d orbital.

4)D block has four series 3d,4d,5d and 6d.

5)D block lies between S and P block.  

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