CH 4 ATOMIC STRUCTURE AND CHDMICAL BONDING

The compound formed due to covalent bond is called Covalent compound.

The chemical bond that is formed between two combining atoms by mutual sharing of one or more pairs of electrons is called Covalent bond.

Ionic compounds are formed by ions but there also exists a repulsive force between ions for like charges. Since the electrostatic force of attraction between opposite charges is much higher, it makes the ionic compounds stable.

The number of electrons that an atom of an element loses or gains to form an electrovalent bond is called its Electrovalency.

The cation and the anion being oppositely charged attract each other and form a chemical bond. Since this chemical bond formation is due to the electrostatic force of attraction between a cation and anion, it is called an Electrovalent bond.

The atoms of different elements with the same mass number, but different atomic number.

The atmos of the same element having the same atomic number but different mass number.

Atoms of all noble gases have eight electron in their outermost shell. This arrangement is known as Octet.

Valency of an element is the combining capacity of that element with other elements and is equal to the number of electrons that take part in a chemical reaction.

Those elements that can gain electrons to form ions which are negatively charged are called Anions.