Question

d block elements show horizontal and vertical similarity in periods and groups. why? ​

Answer 1

Answer:

Transition elements show horizontal as well as vertical relationship. ... Transition elements, due to shielding effect accquire almost similar size to last five elements to show horizontal relationship. Vertical relationship is due to similar electronic configuration.

Answer 2

Explanation:

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In transition metals, there is a greater horizontal similarities in the properties of the elements in a period in comparison to the periods in which the d-orbitals are not involved. This is because in a transition series, the valence shell electronic configuration of the elements do not change.

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