Question

How can I find valence electrons on the periodic table?

Answer 1

Hint:The valence electrons are the electrons present in the outer shell of the atom. The valence electrons are responsible for the formation of chemical bonds between the two elements. The valence electrons can be determined with the help of a periodic table.

Complete step by step answer:The periodic table is also known as a periodic table of the elements where the chemical elements are arranged according to their property. The number element represents the number of protons present in the nucleus of that element. In the periodic table seven rows are present which are known as periods, the columns are called groups which contain elements comprising similar chemical properties. In the period, metals are present on the left side of the periodic table and non-metals are present on the right side of the periodic table. Group 17 contains halogen atoms and group 18 contains noble gases. Total 118 elements are present in the periodic table.
In the periodic table elements are present in the box where above the symbol of atom, the atomic number is written and below the symbol atomic mass is written.
The valence electrons are those electrons which are present in the outermost orbital of the atom.
To find the valence electrons on the periodic table first determine that the element is present in which group. The elements present in the same group have the same number of valence electrons.
The Group 1 atoms have 1 valence electron.
The Group 2 atoms have 2 valence electrons.
The Group 3 atoms have 3 valence electrons.
The Group 4 atoms have 4 valence electrons.
For example carbon is a group 4 element, so the valence electrons in the carbon atom is 4.
The oxygen is a group 6 element, the valence electrons in the oxygen atom is 6.

Note:
The valence electrons of the charged atom are different from the valence electrons of the neutral atom. The valence electrons of the charged atom are calculated by subtracting the main group with the charge present on the atom.