In pure compounds, reactivity is controlled by the physical properties of the sample. It is a relative tendency of an element to gain or lose an electron(s) during a chemical reaction. Reactivity in Chemistry refers to the rate at which a chemical substance undergoes a chemical reaction in time.
The scientific study of chemical changes and their kinetics is another form of reactivity definition. It is a measurement of how much a substance reacts with others. In general, the reactivity definition is the degree to which a substance shows chemical change when mixed with another substance. In this section, we shall discuss elements’ reactivity and trends in the Periodic Table.
But why does it happen? And what is this affinity? How does reactivity vary in the Periodic Table? Like some elements show more affinity to form bonds with others, while some do not show any affinity. There are many observable patterns in elements’ physical and chemical properties as we move across a period or down in a group in the Periodic Table. These trends are broadly divided into two categories, i.e., physical properties and chemical properties. The elements of the Periodic Table show various trends.
