What is the purpose of lewis dot diagrams? a. to show structural formula in which all subatomic particles are represented by dots; dot pairs or dashes b. to show structural formula in which valence protons are represented by dots; dot pairs or dashes c. to show structural formula in which valence electrons are represented by dots; dot pairs or dashes. d. to show structural formula in which valence neutrons are represented by dots; dot pairs or dashes

The purpose of Lewis dot diagrams, "To show structural formula in which valence electrons are represented by dots; dot pairs or dashes."

Explanation:

Lewis dot structure are the diagrammatic representation of the valence electrons of the atoms in the molecule. These lewis structure helps us in visualizing the valence electrons of the atom as well as the molecules whether they are in lone pairs or have bonds. The dot move around the outer elements of the molecule first unless they archive octet. The structure tells us about the connectivity of the compound. From this we can just check whether the element is available for bonding or not.

answer : a model is often used to explain and make things easier to understand when any scientific topic needs to be demonstrated and explained.

as in this case where a scientist wants to use a model to present the results of his detailed scientific investigation. he should do it as it will him to make the audience understand the concept in a much better way. also, it can be changed according to new scientific understandings.