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 Periodicity or periodic trend of valence or oxidation state Valency is the number of electrons present in the […]

Electronegativity is the tendency to attract the shared pair of electrons towards itself in a covalent bond. Here, in this article we will discuss about electronegativity and how to apply it. What is electronegativity It is the tendency to attract the shared pair of electrons towards itself in a covalent bond. It is represented by […]

Electron gain enthalpy is the energy released when a neutral isolated gaseous atom accepts the electron. Here, we will discuss how the ▲eg H varies in the periodic table. What is electron gain enthalpy It is the amount of energy released when a neutral gaseous atom accepts the extra electron to form anion. X (g) […]

Ionisation energy increases in the period and decreases in the group. Here, we will study why and how to explain the variation of ionisation energy. Check out the following post on ionisation energy here : For more updates join me on  You Tube Channel : Chemistry with mona mam Website :  Basics of chemistry.com Facebook […]

Ionisation energy is the energy required to remove the most loosely bounded valence electron. Here we will also discuss how IE vary in Periodic table. What is ionisation energy The minimum amount of energy required to remove the most loosely bounded electron from the isolated gaseous atom. M (g) + IE ➡️ M+ + e– […]

Here we will discuss what are isoelectronic species. Let’s study about the examples of isoelectronic species and how to explain them. What are isoelectronic species Variation of ionic sizes of isoelectronic ions The ionic radii of isoelectronic ions decreases with the increase in the magnitude of nuclear charge. FAQ’s related with isoelectronic ions Answer : […]

Here, we will discuss how ionic radii varies in the group and period. Let’s see the comparison of ionic radii with corresponding atomic radii. What is ionic radii The effective distance from the centre of the nucleus of the ion up to where it exerts its influence on its electron cloud. Or we can say […]

Here, we will discuss how the variation of atomic radii in group and period. We will study why do atomic radii increases in the group and decreases along the period. Variation of atomic radii in the group and period Why the at. radii decreases from left to right in a period But sometimes, we observe […]

Here, we will discuss about the different types of radii of atom and how to explain them. What is atomic radii : types of radii Atomic radii is the distance between the centre of the nucleus to the outermost shell containing electrons. What is covalent radii It is one half of the distance between the […]

There are some rules to predict period, group & block in Periodic table. Here, we will classify the elements of the periodic table. How to predict group in Periodic table How to predict period of an element Period corresponds to the principal quantum number of the valence shell. How to predict block of an element […]