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Answer : A Lewis structure is a graphical representation of the distribution of electrons around atoms. Mainly it illustrates the lone pairs of electrons present in molecules. They are also known as Lewis dot diagrams and mainly used for simple way to represent the configuration of atoms within a molecule.
The halogens are the five non-metallic elements found in group 7A of the modern periodic table. The term "halogen" stands for "salt-former" and compounds which contains halogens are called as "salts" as they produce salts when it reacts with metals.
All halogens are supposed to have 7 electrons in their outermost shells.
When a diatomic structure is formed by two elements of halogens, one electron from each halogen combines to form bonds between them.
The diagram is attached here in the answer.
Lewis structures are the representation of the electrons and the bond of the atoms and the lone pairs of the given element or the compound. They are represented in the forms of dots and lines.
How to write the lewis structure?
It is a graphical illustration of the atoms, bonds and valence electrons along with the lone pairs surrounding the atoms.
They depict the electronic configuration of the atoms. The halogens are non-metallic elements and belong to the 7A group of the periodic table.
The halogens are salt-forming elements and produce salt when reacts with the metallic compounds or elements.
The halogen group have seven electrons in their outer shells and when the diatomic structure is created then the one electron from individual atoms bonds and is shown in the attached image below.
Therefore, there are 7 electrons in the outer shell of the halogens.
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