Question

In the given graph, a periodic property $ (R) $ is plotted against atomic numbers $(Z)$ of the elements. Which property is shown in the graph and how is it correlated with reactivity of the elements?

• A. Ionisation enthalpy in a group reactivity decreases from $a \rightarrow e$
• B. Ionisation enthalpy in a group decreases reactivity increases from $a \rightarrow e$
• C. Atomic radius in a group reactivity decreases from $a \rightarrow e$
• D. Metallic character in a group reactivity increases from $\rightarrow e$

Answer 1

Answer: (B)

$I.E. $ in a group decreases and reactivity increases.