What are d-block elements?

The elements in which the last electron enters the d-orbital of the penultimate shell i.e.,(n-1)d-orbital where ‘n’ is the outermost shell, are called d-block elements.

Their general valence or outer electronic configuration is (n – 1) d1-10 ns 1-2

Explain the position of d-block elements in the periodic table.

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