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Elements in the group 3,4,5,6,7,8,9,10,11and 12 which are present at the center of the periodic table are known as d block elements .d - orbital .Transition metals are also known as d-block elements.

Answer

The d-block elements are found in groups 3, 4, 5, 6, 7, 8, 9, 10, 11, and12 of the periodic table; d-block elements are also known as thetransition metals. The d orbital is filled with the electronic shell “n-1.”

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d-block elements are those in which the last electron o ft he atom enters into a d-orbital. d-block elements are classified into 3d, 4d, 5d and 6d (incomplete) series.

Answer

The d-block elements are found in groups 3, 4, 5, 6, 7, 8, 9, 10, 11, and 12 of the periodic table; d-block elements are also known as the transition metals. The d orbital is filled with the electronic shell “n-1.”

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