Question

what is the difference between normal and lewis symbol of an element

Answer 1

normal symbol like =>for helium ( He)
lewis symbol=> :He

Answer 2

Explanation:

Normal symbol of an element is the abbreviation used to depict any element. Every element has different symbol.

For example, symbol Na represents sodium, symbol P represents phosphorous etc.

On the other hand, lewis symbol is also known as electron-dot structure which represents the number of valence electrons present in as atom.

For example, lewis structure of sodium is Na· so, here dot represents one valence electron of sodium.