Account for the following : (i) Transition metals and their compounds show catalytic activities. (ii) $\text{Zn}$, $\text{Cd}$ and $\text{Hg}$ are non-transition elements. (iii) $\text{Zr}$ and $\text{Hf}$ are of almost identical atomic radii.

Year	Paper Code	Set	Position
CBSE 2022	Series 56-2	Set 1	Question 11
CBSE 2022	Series 56-2	Set 2	Question 4
CBSE 2022	Series 56-2	Set 3	Question 9

• Step 1: Stating the fundamental formula / law statement (+1 Mark)
• Step 2: Intermediate mathematical substitution or proof steps (+1 Mark)
• Step 3: Correct final value or conclusion with mandatory SI units (+1 Mark)