Question

1. what is a lewis valence e-dot structure?

a list of where all the electrons are located in atom
a representation of the protons in an atom
a model to predict the mass of the molecule
a representation of the valence electrons arrange around the nucleus of an atom

Explanation:

A Lewis valence - e⁻ dot structure is a way to represent the valence electrons (the electrons in the outermost shell of an atom) arranged around the nucleus of an atom. It is not about all electrons (as inner - shell electrons are not usually shown in a simple Lewis dot structure), not about protons (protons are in the nucleus and not represented in this way in a Lewis dot structure), and not a model to predict the mass of a molecule (molecular mass is calculated based on atomic masses of atoms in the molecule).

Answer:

a representation of the valence electrons arranged around the nucleus of an atom