1. Tardigrade
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  3. Chemistry
  4. In the periodic table, the maximum chemical reactivity is at the extreme left (alkali metals) and extreme right (halogens). Which properties of these two groups are responsible for this?

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Q. In the periodic table, the maximum chemical reactivity is at the extreme left (alkali metals) and extreme right (halogens). Which properties of these two groups are responsible for this?

Classification of Elements and Periodicity in Properties

Solution:

Elements on the left side have lowest ionisation enthalpy due to which they can very easily lose electrons while the elements on the right can accept electrons easily as they show highest negative electron gain enthalpy.