What are the periodic trends in chemical properties & how to explain

We will discuss the important periodic trends in some fundamental properties such as valency or oxidation state and chemical reactivity. Let’s see how to explain the periodic trends in chemical properties.

What is periodicity or periodic trends

  1. Periodicity is the repetition of periodic properties after a regular interval.
  2. In fact, periodicity is related with electronic configuration.
  3. Chemical and physical properties depend upon electronic configuration.
  4. We will discuss here the variation in fundamental properties in the periodic table.
  5. For example: atomic radii, ionic radii, ionisation energy, electron gain enthalpy and valency.

Periodicity or periodic trend of valence or oxidation state

Valency is the number of electrons present in the outermost shell.

Check out the following post on variation of electronegativity here :

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