Different types of periodic table

Periodic Table

A tabular arrangements of elements in groups and periods highlighting the regular trends in properties of elements is called periodic table.

Types of periodic table

i)Doberiner Triads

ii)Newland Law of Octaves

iii)Mendeleev periodic table

iv)Modern periodic table

Cause of periodicity

It is the recurrence of similar electronic configuration.

IONIC AND COVALENT BONDING ANIMATION

Ionic and covalent bonding

The bond which is formed by transfer of electrons from metal to non metal is called ionic bond or electrovalent bond.

The bond which is formed by sharing of electrons between atoms of element having same electro negativities is called covalent bond.