In the given graph, a periodic property ( R ) is plotted against atomic numbers ( Z ) of…
Chemistry · Class 11 · CBSE — Classification of Elements and Periodicity in Properties
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? 
- Ionisation enthalpy in a group, reactivity decreases from a → e.
- Ionisation enthalpy in a group, reactivity increases from a → e.
- Atomic radius in a group, reactivity decreases from a → e.
- Metallic character in a group, reactivity increases from a → e.
Answer
(B) Ionisation enthalpy in a group, reactivity increases from a → e .
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