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chemistry 1

What are isoelectric species? And What determines the difference in the size of atoms or ions if they are isoelectronic ?

the atoms having same number of electrons, irrespective of atomic number or size or charge.

chemistry 0

What are Colligative properties ?

Actually the word co-ligative itself reveals that (“co” means each other and “ligative” means related) These are the properties which are related to each other. The colligative properties are those properties that depend on the number of solute particles in a solution or a mixture. “These properties don’t depend upon the nature of particles “. Following are the colligative properties:- […]

chemistry 4

Why are the noble gases chemically inert?

The outer or valence shell of these elements is complete. And they need not to make any bond. They do not share or transfer the electrons . Due to fully filled orbitals, Their ionisation enthalpies are also very high. So removing an electron from them is also very difficult. The examples of these are Helium, Neon, Argon, Krypton , Xenon […]

chemistry 0

Why sigma bond is stronger than pi bond?

Actually the sigma bond involves head to head overlapping of orbitals, due to which the overlapping takes place on a larger extent. That makes the bond more stronger as compared to pie bond. In pie bond there is a sidewise overlapping of orbitals which leads to lesser extent of overlapping and thus the bond formed is not so strong as […]

chemistry 0

What are the Characteristics of a lone pair ?

What are the characteristics of a lone pair? Characteristics of a lone pair Lone pair are the pair of electrons that do not take part in any chemical bond. They affect the symmetry of molecule or the shape of molecule as they interfere with the other electrons of the molecule . The electrons of lone pair repel the other bond […]

chemistry 0

What are the Banana Bonds?

What is a ”three centre two electron bond”? These are the type of covalent bonds in which overlapping of orbitals of three atoms take place but sharing only two electrons. These type of bonds that are found in electron deficient molecules. for example in case of BF3 , the molecule exists as a dimer that is B2F6 . Here the […]

chemistry 0

WHY THE IONIC REACTIONS ARE FASTER?

How are reactions related to chemical bonds? The type of bond has a great effect on the rate of reaction or speed of reaction. Here we are going to discuss why and how it happens, First of all in case of ionic compounds:- Lets take example of Sodium hydroxide and Hydrochloric acid NaOH (aq) + HCl (aq) →  NaCl + […]

chemistry 0

Azeotropes

What are azetopes? Azeotropes are the constent boiling mixtures or solutions. it means that these mixtures can not be separated by simple distillation or boiling , because they will have the same composition of mixture even in the vapour state. for example as in case of mixture of nitric acid and water, the highest attained concentration of the nitric acid […]

chemistry 0

What is an electrophile?

See electrophile word is made up by the joining of two words “electro+phile. Electro means the “electron “ and phile means “loving” in short the electrophile is electron loving specie or attacking reagent that attacks only on the part of molecule with high electron density. For example :- H+ , H3O+ , NH4+   and BF3 etc