Which of the following pairs of d-block metals will have approximately the same atomic radii due to the $\underline{\text{ lanthanide contraction? }}$
A) Fe and Ru
B) Ru and Rh
C) Ru and Os
D) Os and Ir
E) Co and Ni

Question

Which of the following pairs of d-block metals will have approximately the same atomic radii due to the $\underline{\text{ lanthanide contraction?  }}$
A) Fe and Ru
B) Ru and Rh
C) Ru and Os
D) Os and Ir
E) Co and Ni

Quizplus · Accepted Answer

The lanthanide contraction causes elements in the same group but different periods to have similar atomic radii. Ru and Os are in the same group and are affected by this contraction, resulting in similar atomic sizes.

Which of the Following Pairs of D-Block Metals Will Have lanthanide contraction? ‾\underline{\text{ lanthanide contraction? }} lanthanide contraction? ​

Which of the Following Pairs of D-Block Metals Will Have $\underline{\text{ lanthanide contraction? }}$