The difference in atomic number between adjacent elements is always one (1).
In the columns of the periodic table, chemical properties are similar.
Elements with full outer shells, the noble gas elements, are located in the column at the extreme right of the periodic table.
On the left of the periodic table, especially group 1 and group 2 elements.
They all are Halozen elements.
Alkali metals are group-1 elements. They are located at extreme left in periodic table.
In the columns of the periodic table, chemical properties are similar.
Their atomic number differ by 1. It is applicable for elements located next to one another.
The difference in atomic number between adjacent elements is always one (1).
Elements with full outer shells, the noble gas elements, are located in the column at the extreme right of the periodic table.
Stable Elements in the periodic table are located in Group 18 of the periodic table.It is a group of noble gases.Noble gases are considered most stable in nature.
Elements in the same period (row) have the same number of electron shells or energy levels
Metals are located on left side in periodic table.Eg-group 1,2 elements
Representive elements
On the left of the periodic table, especially group 1 and group 2 elements.
Elements with similar physical and chemical properties are located in a group.
They all are Halozen elements.
On the right side of the periodic table.