Answered

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Predict the correct statement from the following:

A. The oxides and hydroxides of d-block elements are less basic than those of f-block elements.

B. f-block elements are called transition elements.

C. The size of atoms and ions of d-block elements are relatively smaller than those of f-block elements.

D. The tendency of d-block elements to form complexes is less than that of f-block elements.

Sagot :

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Final answer:

Differences in size of atoms and ions between d-block and f-block elements are due to their electron configurations and trends in the Periodic Table.


Explanation:

The correct statement from the options provided is: The size of atoms and ions of d-block elements are relatively smaller than those of f-block elements.


This is due to the gradual changes in properties across the Periodic Table from left to right. Elements in the d-block have smaller atomic radius, increased ionization energy, enhanced electronegativity, and more nonmetallic character compared to f-block elements.


In summary, d-block elements have relatively smaller atoms and ions compared to f-block elements, as explained by their electron configurations and the trends in properties across the Periodic Table.


Learn more about Comparison of size in atoms and ions here:

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