What does each dot in an electron dot diagram represent?

Explanation:

A electron dot diagram is defined as the diagram in which dots are placed around the symbol of an element.

These dots represent the number of valence electrons present in an element.

For example, atomic number of chlorine is 17 and it has 7 valence electrons. So, an electron dot structure of chlorine will have 7 dots around the symbol Cl.

Therefore, we can conclude that each dot in an electron dot diagram represent the number of valence electrons.

1.solid

2.carbon dioxide

3.helium