Question

What is the trend in reactivity on the periodic table?

Answer 1

Hint: “Physical and chemical characteristics of the elements are periodic functions of their atomic numbers,” according to Moseley's Modern Periodic Law. Elements are placed in the contemporary periodic table according to their atomic numbers, which, as previously established, are closely connected to their physical and chemical characteristics. That is why elements in the periodic table have periodic physical and chemical characteristics.

Complete answer:
The reactivity of an atom relates to how probable it is for it to react with other substances. Because the transfer/interaction of electrons is the foundation of chemical processes, this is generally defined by how readily electrons can be withdrawn (ionisation energy) and how strongly they desire to take other atom's electrons (electronegativity).
Metals.
Period - As you go from left to right throughout a period, your responsiveness diminishes.
As you go down a group, your reactivity rises.
Non-Metals
The simpler it is for electrons to be given or taken away the farther to the left and down the periodic chart you travel, the greater the reactivity.
Over the course of a time, reactivity rises as you move from left to right.
As you move down the group, your reactivity declines.
The stronger the electronegativity, the more intense the electron exchange. The higher the electronegativity, the farther right and up on the periodic table you go.

Note:
The electrical configuration of the elements provides the basis for the current periodic table. The electrical configuration of the valence shell of the elements is repeated in such a manner that elements with the same valence shell electrons fall under the same group when they are arranged in order of increasing atomic number. They have comparable characteristics because the number of valence shell electrons is the same.