Question

The elements of the three transition series of the d - block are given below:
$\begin{array}{cccccccccc}& & & & & & & & & \\ Sc& Ti& V& Cr& Mn& Fe& Co& Ni& Cu& Zn\\ Y& Zr& Nb& Mo& Tc& Ru& Rh& Rd& Ag& Cd\\ La& Hf& Ta& W& Re& Os& Ir& Pt& Au& Hg\end{array}$
In any transition series, as we move form left to right, the d - orbitals are progressively filled and their properties vary accordingly.
Which element do you expect to have the smallest atomic radius?

• A. Sc
• B. Zn
• C. La
• D. Hg

Answer 1

The correct option is B Zn

$\begin{array}{ccccc}& & & & \\ & Sc& Zn& La& Hg\\ Covalentradii\left(A^{\circ }\right)& 1.44& 1.25& 1.69& 1.44\end{array}$