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Which of the following are d-block elements, but not regarded as transition elements?

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in Chemistry – Class 12 by (188k points)
Which of the following are d-block elements, but not regarded as transition elements?

(a) Ru, Ag, Au

(b) Zn, Ru, Pd

(c) Zn, Cd, Hg

(d) Cd, Rh, Pd

The question was posed to me in final exam.

My question is from Electronic Configurations of the D-Block Elements in division D and F-Block Elements of Chemistry – Class 12

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Right option is (c) Zn, Cd, Hg

To explain I would say: Transition elements refer to those d-block elements who have their penultimate shells incomplete. In the case of Zinc, cadmium and mercury, since their penultimate shell is completely occupied, they are referred to as d-block elements and not regarded as transition elements.

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