Question

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D block elements.​

Answer 1

Explanation:

The d-block elements are called transition metals and have valence electrons in d orbital's. The f-block elements,found in the two rows at the bottom of the periodic table, are called inner transition metals and have valence electrons in the f-orbital's.

There are 40 d-block elements, 32, 36 or 40 transition metals depending on whether you count groups 3 or 12 as transition metals, and 28 f-block elements (there is no universal agreement on this point).

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Answer 2

ANSWER

ANSWER REFER TO THE ATTACHMENT