In some electron dot diagrams, a chemical symbol may have no dots. explain the meaning of such a symbol.

Basically, Lewis structures (also known as Lewis dot structures or electron dot structures) are diagrams that represent the valence electrons of atoms within a molecule. These Lewis symbols and Lewis structures help visualize the valence electrons of atoms and molecules, whether they exist as lone pairs or within bonds.Lewis dot diagrams use dots arranged around the atomic symbol to represent the electrons in the outermost energy level of an atom. Single bonds are represented by a pair of dots or one line between atoms. Double bonds are represented by two pairs of dots or two lines between atoms.

Explanation:

answer; economic order quantity;

they are made of gases.

they have a spherical shape.

they make energy through fusion.